Evaluating Solution Correctness: Which evidence most strongly shows that a computational solution meets its stated requirements across normal and edge cases? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-11, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Human and Computer Strengths: Which task allocation best matches human strengths in judgment and context with computer strengths in speed, repetition, and scale? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Criteria, Constraints, and Tradeoffs: Which solution best satisfies the stated success criteria while respecting limits on time, cost, data, hardware, and accessibility? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3A-AP-21, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Communicating a Computational Solution: Which explanation most clearly connects a problem, algorithm, data, design decisions, evidence, and limitations for a target audience? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3A-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Layers of a Computing System: Which layered diagram correctly relates hardware, firmware, operating systems, applications, and users? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3B-CS-01. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Core Hardware Components: Which component-function match is correct for the processor, memory, storage, motherboard, power supply, and cooling system? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

CPU Instruction Cycle: Which sequence correctly traces the fetch-decode-execute-store cycle for a processor instruction? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-01, 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Memory Hierarchy: Which comparison correctly orders registers, cache, RAM, and secondary storage by typical speed, capacity, and persistence? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Storage Technologies: Which storage option best fits a scenario based on capacity, speed, durability, portability, and cost? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Input, Output, and Peripheral Devices: Given a system diagram, which devices correctly serve as input, output, or both? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Operating System Roles: Which operating-system function best explains process scheduling, memory management, file management, device control, or user security in a scenario? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-01. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Application, Utility, and System Software: Which classification correctly identifies an example as application software, a utility, a driver, firmware, or an operating system component? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3B-CS-01. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Virtualization and Containers: Which explanation best distinguishes a virtual machine from a container and identifies an appropriate use for each? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-01, 3A-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

System Performance and Bottlenecks: Which component is the most likely performance bottleneck given evidence about processor load, memory use, storage activity, temperature, and network delay? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3A-CS-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Logic Gates and Digital Circuits: Which truth table or gate diagram correctly represents NOT, AND, OR, XOR, NAND, or NOR behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-02, 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

File Systems, Paths, and Permissions: Which file path and permission setting best supports the stated organization, access, and security requirements? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-01, 3A-NI-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Systematic Troubleshooting: Which troubleshooting plan best isolates a cause by reproducing the issue, checking simple causes, changing one variable, testing, and documenting results? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Maintenance, Updates, and Backups: Which maintenance schedule best balances software updates, hardware care, backup frequency, recovery needs, and system availability? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3A-NI-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

File Organization and Naming Conventions: Which folder structure and naming convention would make a project easiest to locate, share, archive, and maintain? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

File Formats and Compatibility: Which file format is most appropriate for the stated purpose based on editability, compression, interoperability, and preservation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3A-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Effective Search Strategies: Which search query, operator, or filtering strategy is most likely to locate authoritative information efficiently? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-27, 3A-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Source Credibility and Evidence: Which source is most credible for the claim based on authorship, evidence, currency, purpose, corroboration, and possible conflicts of interest? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3A-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Citation, Attribution, and Academic Integrity: Which use of code, media, data, or ideas correctly follows attribution, citation, license, and academic-integrity expectations? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-20, 3A-IC-28. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Collaborative Documents and Permissions: Which sharing and permission configuration best allows a team to collaborate while protecting sensitive or final materials? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-22, 3A-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Synchronous and Asynchronous Communication: Which communication channel best fits the urgency, complexity, privacy, audience, and documentation needs of a team situation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-27, 3A-AP-22. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Accessible Digital Communication: Which revision makes a document, presentation, or demonstration most understandable and accessible to a diverse audience? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3A-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Productivity Automation: Which built-in feature, macro, script, or template would most efficiently automate the repetitive task without creating unnecessary risk? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-18, 3B-AP-16. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Spreadsheet and Computational Tool Selection: Which tool is best suited to the task based on data volume, calculation needs, collaboration, reproducibility, and visualization? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-11, 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Local and Cloud Workflow: Which workflow best balances offline access, synchronization, version history, privacy, and recovery? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3A-NI-07. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Digital Portfolio and Evidence of Learning: Which portfolio entry most effectively demonstrates the artifact, process, feedback, revisions, attribution, and reflection associated with a skill? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3A-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Bits, Bytes, and Binary States: Which statement best explains how bits and bytes represent information using discrete binary states? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Binary-to-Decimal Conversion: Which decimal value is represented by the given unsigned binary pattern? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Decimal-to-Binary Conversion: Which binary pattern correctly represents the given nonnegative decimal integer? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Hexadecimal Representation: Which hexadecimal value is equivalent to the given binary or decimal value? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Signed Integers and Overflow: Which result correctly identifies signed integer range, two's-complement interpretation, or overflow in the stated fixed-width system? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Boolean Data and Logical Representation: Which bit pattern or Boolean expression correctly represents the stated true-false conditions? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09, 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Text Encoding and Unicode: Which explanation best accounts for how character encodings represent multilingual text and why incompatible encodings can produce errors? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Digital Images: Pixels and Resolution: Which image comparison correctly relates pixel dimensions, resolution, scaling, file size, and visible detail? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Color Models and Color Depth: Which RGB or hexadecimal color representation matches the displayed color or stated channel intensities? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Digital Audio Sampling: Which statement correctly predicts how sampling rate, bit depth, duration, and channel count affect sound quality and file size? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Digital Video Representation: Which option best explains how frame rate, resolution, color depth, and compression affect a digital video? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Lossless and Lossy Compression: Which compression method is most appropriate for the stated text, image, audio, or video use while preserving required information? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09, 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Metadata and File Properties: Which metadata field would best support searching, verification, organization, accessibility, or rights management in the scenario? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3A-IC-29. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Data Size Units and Estimation: Which estimate or conversion among bits, bytes, kilobytes, megabytes, gigabytes, and terabytes is most reasonable? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Floating-Point Precision: Which explanation best describes why some decimal values cannot be represented exactly and may produce rounding error in binary floating-point arithmetic? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Choosing a Data Representation: Which representation best balances precision, range, storage, transmission, compatibility, and human readability for the stated task? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-09, 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Network Purposes and Scopes: Which network type or scope best matches the scenario: personal, local, campus, metropolitan, wide-area, or global? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Client-Server and Peer-to-Peer Models: Which architecture best fits the stated resource-sharing, control, scalability, and reliability requirements? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Network Devices and Roles: Which device-function match is correct for a modem, switch, router, wireless access point, firewall, server, or network interface? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Packets, Protocols, and Layering: Which sequence best describes how application data is divided, addressed, transmitted, routed, checked, and reassembled across a network? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Internet Protocol Addresses: Which statement correctly distinguishes IPv4 and IPv6 addresses and identifies the role of an IP address? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

MAC Addresses and Local Delivery: Which explanation best distinguishes a device's link-layer address from its network-layer address during local and routed communication? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Domain Name System: Which diagram correctly traces how a domain name is resolved to an IP address? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

URLs, HTTP, and HTTPS: Which URL component or web protocol action correctly identifies the scheme, host, path, query, request, response, or secure connection? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Routing and Redundancy: Which route or topology best maintains communication when a link or device fails? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3B-NI-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Fault Tolerance and Scalability: Which design change would most improve a network's ability to handle growth and continue operating after failures? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3B-NI-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Bandwidth, Latency, Throughput, and Jitter: Which network metric best explains the observed delay, transfer time, responsiveness, or media quality? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-NI-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Wireless and Mobile Networks: Which wireless technology best fits the range, data rate, power, mobility, interference, and security requirements? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3B-NI-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Cloud Service Models: Which cloud model - software, platform, or infrastructure as a service - best matches the customer's level of control and management responsibility? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Parallel and Distributed Computing: Which approach best divides a large task among processor cores or networked computers while accounting for coordination overhead? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3B-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Diagnosing Network Problems: Given symptoms and test results, which next step best isolates a problem involving addressing, name resolution, signal, routing, congestion, or service availability? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3B-NI-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Open Standards and Interoperability: Which use of an open protocol or standard most directly enables devices and software from different vendors to communicate? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3A-IC-24. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Confidentiality, Integrity, and Availability: Which security objective is primarily threatened in the scenario: confidentiality, integrity, or availability? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3A-NI-08. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Threats, Vulnerabilities, and Risk: Which option correctly identifies the threat, vulnerability, likelihood, impact, and resulting risk in a security scenario? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3A-NI-08. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Authentication and Authorization: Which statement best distinguishes proving identity from determining what an authenticated user may access or do? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Passwords, Passphrases, MFA, and Passkeys: Which authentication setup best resists guessing, credential reuse, phishing, and account recovery attacks? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3A-NI-07. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Least Privilege and Access Control: Which permission design gives users and services only the access needed to complete their authorized tasks? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Encryption Concepts: Which diagram correctly shows plaintext, an encryption algorithm, a key, ciphertext, and decryption? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Symmetric and Asymmetric Encryption: Which encryption approach best fits the need for speed, key exchange, digital signatures, or secure communication between strangers? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Hashing, Salting, and Integrity Checks: Which use of a cryptographic hash correctly supports password protection, file-integrity verification, or tamper detection? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Certificates and TLS: Which sequence best explains how a browser uses a digital certificate and encryption to establish a trusted HTTPS connection? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Phishing and Social Engineering: Which message contains the strongest indicators of phishing, impersonation, urgency, manipulation, or unsafe link behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-05, 3A-NI-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Malware Types and Behaviors: Which description correctly identifies a virus, worm, Trojan, ransomware, spyware, rootkit, or botnet by its behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Patching, Backups, and Recovery: Which layered defense plan best reduces the likelihood and impact of malware, device failure, or accidental deletion? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-05, 3A-NI-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Firewalls, Segmentation, and VPNs: Which network-security control best filters traffic, limits lateral movement, or protects data on an untrusted network? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Secure Coding and Input Validation: Which code or design change best prevents untrusted input from altering commands, queries, paths, or page content? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-18, 3B-NI-04. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Privacy Settings and Data Minimization: Which configuration collects and shares the least personal data necessary while still supporting the stated service? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-29, 3A-IC-30. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Incident Response: Which order best represents preparation, detection, containment, eradication, recovery, and lessons learned after a security incident? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3A-CS-03. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Security Risk Assessment and Tradeoffs: Which safeguard provides the best balance of risk reduction, usability, cost, feasibility, equity, and ethical impact? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-07, 3A-NI-08. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Ethical and Legal Security Practice: Which action stays within authorization, scope, law, and responsible-disclosure expectations during a security investigation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-08, 3B-IC-28. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Properties of an Algorithm: Which procedure qualifies as an algorithm because it has precise steps, defined inputs and outputs, and a terminating or intentionally ongoing process? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Pseudocode Conventions: Which pseudocode fragment most clearly and language-independently expresses the required process? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3A-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Flowcharts: Which flowchart correctly represents the stated sequence, decision, loop, input, and output behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3A-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Sequencing: Which order of steps produces the intended result when each operation changes the state used by later operations? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Selection: Which conditional structure correctly chooses among outcomes based on the stated Boolean conditions? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Iteration: Which loop structure best repeats the required process with the correct initialization, condition, update, and stopping behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Nested Control Structures: Which trace correctly follows a decision or loop placed inside another control structure? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Variables and State: Which variable update correctly represents how the algorithm's state changes over time? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Procedures and Functions: Which procedure definition removes repetition and gives one clear responsibility to a reusable component? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Parameters and Return Values: Which parameter list and returned result make a procedure reusable across the stated range of inputs? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Algorithm Decomposition and Modules: Which module breakdown minimizes duplication and coupling while making each component easier to test? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Tracing an Algorithm: Given an algorithm and input, which table correctly shows the values of variables and output after each step? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Correctness and Test Cases: Which set of tests best checks normal cases, boundaries, invalid values, and combinations likely to expose a logical error? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-11, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Comparing Algorithms: Which algorithm is preferable when correctness, clarity, implementation effort, input size, and execution cost are considered together? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Linear and Binary Search Concepts: Which search method and precondition best fit the data organization and target-finding task? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Sorting Strategy Concepts: Which sorting trace correctly shows the next step of selection, insertion, or merge sort? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Brute Force, Greedy Methods, and Heuristics: Which strategy best fits the problem when an exact solution, a locally best choice, or a practical approximation is required? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Algorithmic Limitations and Bias: Which limitation arises from the algorithm, its assumptions, its training or input data, or the way its output is interpreted? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-25, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Syntax and Semantics: Which code fragment is syntactically valid and has the intended meaning in the stated language or pseudocode? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3B-AP-24. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Comments and Readability: Which revision improves meaningful names, formatting, comments, and structure without changing program behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Literals and Data Types: Which data type best represents the given integer, decimal, Boolean, text, collection, or object value? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14, 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Variables and Assignment: After the assignment statements execute, which variable values are correct? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Arithmetic Operators and Precedence: Which value results from the expression after applying parentheses, exponentiation, multiplication, division, remainder, addition, and subtraction in the correct order? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Input and Output: Which input-processing-output code fragment correctly reads the required values, computes the result, and displays it in the requested format? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Type Conversion: Which conversion correctly changes the value between text, integer, decimal, or Boolean form without losing required information? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

String Indexing and Slicing: Which expression extracts the requested character or substring while respecting index positions and bounds? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

String Methods and Formatting: Which expression correctly transforms, searches, combines, or formats the given text? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-18, 3B-AP-16. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Boolean Expressions: Which Boolean expression is true for exactly the cases described in the requirement? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Conditional Statements: Which if-elif-else structure produces the required output for all stated input ranges? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Compound Conditions and Short-Circuit Logic: Which compound condition correctly uses AND, OR, and NOT while avoiding unnecessary or unsafe evaluation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

While Loops: Which while loop terminates correctly and repeats exactly as required for the given starting state? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

For Loops and Ranges: Which for loop visits the intended sequence of values, including the correct start, stop, and step? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Loop Tracing: Which trace table correctly records the counter, accumulator, condition, and output for each iteration? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Nested Loops: Which output or execution count results from the nested-loop code? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Lists: Creation and Access: Which list expression correctly creates, indexes, slices, or measures the requested sequence? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14, 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Lists: Mutation and Traversal: Which code correctly adds, removes, updates, or traverses list elements without skipping or misindexing values? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14, 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Dictionaries and Key-Value Maps: Which key-value operation correctly stores, retrieves, updates, or checks the requested association? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-14, 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Function Definition and Calls: Which function header and call correctly match the required name, parameters, arguments, and behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Parameters and Arguments: Which call passes the correct values in the correct positions or by the correct parameter names? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Return Values and Scope: Which result correctly follows local and global scope rules and the function's returned value? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Randomization and Simulation: Which use of pseudorandom values correctly models the stated event and supports repeated trials? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-12, 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Syntax, Runtime, and Logic Errors: Which error category and correction best explain why the program fails to parse, crashes during execution, or produces the wrong result? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Debugging with Traces and Breakpoints: Which debugging observation or next step most effectively isolates the faulty statement or incorrect assumption? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Exceptions and Defensive Programming: Which validation or exception-handling structure prevents the program from failing on the stated invalid input or unavailable resource? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-18, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Text File Input and Output: Which code sequence correctly opens, reads or writes, processes, and closes a text file while handling line boundaries? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3A-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Classes and Objects: Which statement correctly identifies a class as a blueprint and an object as an instance with state and behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Attributes and Methods: Which class diagram correctly separates object data from operations that use or change that data? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Constructors and Initialization: Which constructor call and resulting object state are correct for the given class definition? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Encapsulation and Access Control: Which access design best protects internal state while exposing a clear and safe public interface? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14, 3B-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Instance and Class Members: Which use correctly distinguishes members associated with each object from members shared by the class? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Object References and self/this: Which trace correctly identifies the object referenced by self or this during a method call? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Method Signatures and Overloading: Which method call matches the available signature by name, parameter count, order, and types? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Inheritance: Which inheritance relationship correctly models an is-a relationship and reuses appropriate state or behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Polymorphism and Interfaces: Which method implementation will execute when a superclass or interface reference refers to the stated object? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Composition versus Inheritance: Which design better models the relationship as has-a rather than is-a and reduces unnecessary coupling? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14, 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Using Standard APIs: Which documented class, constructor, method, or constant should be used to perform the stated operation? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-16. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Arrays and Dynamic Lists: Which collection is more appropriate based on fixed size, resizing, element type, access pattern, and available operations? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Aliasing and Object Mutation: Which variables refer to the same object after the assignments, and which mutation is visible through each reference? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12, 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Equality versus Identity: Which comparison correctly tests whether two references point to the same object or represent equivalent values? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Class Design Responsibilities: Which distribution of fields and methods gives each class one coherent responsibility and minimizes dependency? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-14, 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Comparing Java, Python, and Other Languages: Which language feature makes a language more suitable for the stated problem, platform, performance need, or development context? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-24. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Abstract Data Types: Which description best distinguishes an abstract data type's behavior from a particular implementation? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Arrays and Lists: Which structure and operation best fit indexed access, ordered traversal, insertion, deletion, and resizing requirements? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Stacks: Which sequence of push and pop operations produces the shown last-in-first-out state or output? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Queues: Which sequence of enqueue and dequeue operations produces the shown first-in-first-out state or output? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Sets and Maps: Which structure best supports uniqueness, membership testing, or lookup by key in the scenario? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Trees: Which tree diagram correctly represents parent-child relationships, depth, leaves, or a hierarchical search path? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Graphs: Which graph model and path correctly represent the entities and connections in the scenario? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Linear Search: Which trace correctly identifies the comparisons made by linear search and the returned result? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Binary Search: Which midpoint and remaining interval are correct for the next step of binary search on sorted data? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Selection and Insertion Sort: Which array state correctly follows the next pass of selection sort or insertion sort? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Merge Sort: Which diagram correctly shows the divide and merge steps that produce a sorted sequence? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Recursive Structure: Which function has a valid base case, makes progress toward it, and combines recursive results correctly? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-13. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Tracing Recursion and the Call Stack: Which call-stack diagram or returned value correctly represents execution of the recursive algorithm? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-13. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Growth Rates and Informal Complexity: Which function or graph best describes constant, logarithmic, linear, linearithmic, quadratic, or exponential growth? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Time-Space Tradeoffs: Which design best balances execution time and memory use for the given constraints and input size? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-11, 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Selecting a Data Structure: Which data structure most directly supports the required ordering, access, update, search, and memory behavior? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-12. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Stable and In-Place Sorting Concepts: Which statement correctly identifies whether a sorting method preserves equal-item order or requires substantial extra storage? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-10, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Algorithm Correctness and Edge Cases: Which invariant, counterexample, or test most strongly supports or disproves that the algorithm works for all allowed inputs? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-11, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Requirements and User Stories: Which requirement or user story is specific, testable, valuable to a user, and free of unnecessary implementation detail? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Success Criteria and Constraints: Which set of measurable criteria and realistic constraints best defines completion of the proposed software solution? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Program Design Diagrams: Which flowchart, structure chart, UML-style diagram, or data-flow diagram best represents the proposed software design? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Modular Architecture: Which architecture divides the system into cohesive components with clear interfaces and limited coupling? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-17, 3B-AP-14. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Coding Conventions and Style Guides: Which revision best follows consistent naming, indentation, organization, documentation, and language conventions? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Technical Documentation: Which documentation most effectively explains setup, inputs, outputs, interfaces, assumptions, examples, and known limitations? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Unit Testing: Which unit test most directly verifies one function or method independently with a clear expected result? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Boundary and Equivalence Testing: Which minimal set of test inputs covers valid groups, invalid groups, and important boundary values? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Integration, System, and Acceptance Testing: Which testing level best checks interactions among components, the complete system, or user requirements? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Debugging Tools and Logging: Which breakpoint, watch expression, stack trace, assertion, or log message would provide the most useful evidence about the defect? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Version Control Commits: Which commit best groups one logical change and includes a clear, specific message? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Branches, Merges, and Conflicts: Which version-control graph or action correctly creates a feature branch, integrates work, or resolves a merge conflict? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Code Review: Which review comment is specific, evidence-based, respectful, and focused on correctness, clarity, maintainability, accessibility, or security? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Issue Tracking and Agile Planning: Which backlog, priority, estimate, or sprint decision best responds to value, risk, dependency, and available capacity? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-22, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Software Licenses and Open Source: Which license condition governs the proposed copying, modification, redistribution, attribution, or source disclosure? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-20, 3A-IC-28. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Libraries, APIs, and Dependencies: Which dependency choice best balances functionality, documentation, compatibility, maintenance, license, and security risk? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-16, 3B-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Build, Deployment, and CI/CD Concepts: Which pipeline stage correctly builds, tests, packages, deploys, monitors, or rolls back a software release? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-17, 3B-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Maintenance, Refactoring, and Technical Debt: Which change improves internal structure and maintainability without altering intended behavior or introducing avoidable risk? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-22, 3B-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Browser-Server Web Architecture: Which diagram correctly traces a browser request, server processing, optional database access, and the returned response? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3A-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Semantic HTML Structure: Which HTML element best conveys the meaning and structure of the stated heading, navigation, article, list, table, image, or form content? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3B-AP-19. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Links, Images, Lists, and Tables: Which HTML markup correctly represents the requested link, image alternative text, list hierarchy, or data table? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3B-AP-19. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Forms and Input Controls: Which form control, label, name, type, and validation rule best collects the required user input accessibly? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3B-AP-18. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

CSS Selectors and Cascade: Which style rule applies to the element after specificity, inheritance, source order, and the cascade are considered? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-19, 3B-AP-24. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Box Model and Layout: Which computed size or layout result follows from content, padding, border, margin, positioning, flexbox, or grid rules? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-19. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Responsive Design: Which layout or media-query choice best adapts content across phones, tablets, laptops, and large displays? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3B-AP-19. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

JavaScript Events and the DOM: Which event handler or DOM operation correctly responds to the user action and updates the intended page element? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-16, 3B-AP-19. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Web APIs and Data Fetching: Which request, response, status, or data-parsing step correctly uses a web API to update the application? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-16, 3B-AP-19. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Cookies, Sessions, and Local Storage: Which storage mechanism best fits the need for browser persistence, server-managed login state, size, privacy, and security? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3A-IC-29. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Interface Consistency and Feedback: Which interface revision best improves visibility of system status, consistency, error prevention, and recovery? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3A-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

User-Centered Design and Personas: Which design decision is best supported by the stated user goals, context, abilities, constraints, and research evidence? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3A-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Wireframes and Interactive Prototypes: Which wireframe or prototype most clearly represents navigation, information hierarchy, controls, and expected interactions? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3A-AP-23. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Usability Testing: Which task, observation, metric, or follow-up question would produce the most useful evidence about whether users can complete the goal? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3A-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Accessibility Principles: POUR: Which revision most directly improves perceivability, operability, understandability, or robustness for users with disabilities? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3A-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Semantic Accessibility and Keyboard Access: Which markup or interaction change correctly adds labels, headings, landmarks, alternative text, focus order, or keyboard operation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3A-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Color, Contrast, and Noncolor Cues: Which design meets readability needs by providing sufficient contrast and not relying on color alone to communicate meaning? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-21, 3A-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Web Security and Safe Data Handling: Which web-development practice best reduces cross-site scripting, insecure transmission, unsafe authentication, or excessive data collection? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-18, 3A-IC-29. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Structured, Semistructured, and Unstructured Data: Which classification best describes the organization of the given table, JSON document, log, image, audio, or free text? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Tables, Records, Fields, and Keys: Which table design correctly identifies records, fields, candidate keys, primary keys, and valid values? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Relational Data and Relationships: Which schema correctly represents one-to-one, one-to-many, or many-to-many relationships without unnecessary duplication? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

SQL Selection, Filtering, and Sorting: Which query correctly selects the requested columns and rows and orders the result? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

SQL Aggregation and Grouping: Which query correctly counts, totals, averages, minimizes, or maximizes values for the requested groups? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Database Joins: Which join and matching condition produce the requested combined records from related tables? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10, 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Create, Read, Update, and Delete Operations: Which database operation correctly inserts, retrieves, changes, or removes the specified record while preserving data integrity? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Normalization and Redundancy: Which redesign reduces repeated data and update anomalies while preserving the required relationships? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Data Collection and Sampling: Which collection tool and sampling strategy best produces relevant, representative, ethical, and reproducible data for the claim? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Data Cleaning: Which transformation best handles missing values, duplicates, inconsistent formats, impossible values, or outliers without misrepresenting the data? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05, 3B-DA-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Descriptive Statistics: Which measure of center, spread, proportion, or frequency best summarizes the data for the stated purpose? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Choosing a Visualization: Which chart, map, table, or interactive display best communicates the comparison, distribution, relationship, change, or composition? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Designing Clear Visualizations: Which revision most improves labels, scales, legends, annotations, accessibility, and truthful visual emphasis? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-11, 3A-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Misleading Graphs and Data Claims: Which feature most seriously distorts the interpretation through a truncated axis, unequal interval, inappropriate area, selective range, or unsupported conclusion? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Correlation, Causation, and Confounding: Which conclusion is justified by the observed association, study design, possible confounders, and limits of the data? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05, 3B-DA-07. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Data Pipelines and Reproducibility: Which sequence correctly collects, stores, cleans, transforms, analyzes, visualizes, validates, and documents data? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05, 3B-DA-06. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

AI, Automation, and Rule-Based Systems: Which example is best classified as fixed automation, a rule-based expert system, or a system that learns patterns from data? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Machine-Learning Paradigms: Which learning approach - supervised, unsupervised, or reinforcement - best matches the available data and goal? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Features, Labels, and Training Examples: Which variables should serve as features, labels, or excluded information for the stated prediction task? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-06, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Classification, Regression, and Clustering: Which task is best framed as predicting a category, predicting a numeric value, or discovering groups? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Training, Validation, and Test Sets: Which data split and use correctly separates model fitting, tuning, and final evaluation? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-07, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Accuracy, Precision, Recall, and F1: Which evaluation metric best fits the cost of false positives and false negatives in the scenario? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05, 3B-DA-07. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Confusion Matrices: Which counts or metric values are correct for the displayed true-positive, false-positive, true-negative, and false-negative results? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-05, 3B-DA-07. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Overfitting and Generalization: Which learning curve, result pattern, or remedy best identifies and reduces overfitting? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-DA-07, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Neural Networks: Which diagram correctly identifies inputs, weighted connections, hidden layers, activation, and outputs in a simplified neural network? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Generative AI and Large Language Models: Which explanation best describes probabilistic generation, training patterns, context windows, and the possibility of inaccurate output? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Prompt Design and Output Evaluation: Which prompt and verification plan most clearly specifies the task, context, constraints, format, evidence, and evaluation criteria? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Bias and Fairness in AI: Which source of bias or fairness concern is most likely caused by sampling, labeling, feature choice, optimization, deployment context, or feedback loops? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-25, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Explainability and Transparency: Which explanation method or disclosure best helps a user understand the factors, uncertainty, and limits behind an AI-assisted decision? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-IC-25, 3A-IC-30. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

AI Privacy and Security: Which risk most directly involves sensitive training data, model extraction, prompt injection, adversarial input, or unsafe automated access? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-18, 3A-IC-29. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Synthetic Media and Deepfakes: Which evidence and verification strategy best evaluates whether media may be manipulated or AI-generated? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-IC-25, 3A-IC-24. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Recommendation Systems: Which signal and feedback mechanism most likely explains why the system ranked or recommended the content? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08, 3A-IC-29. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Computer Vision and Natural Language Processing: Which AI task best matches image classification, object detection, speech recognition, translation, sentiment, or text generation? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-AP-08. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Human-in-the-Loop and Responsible AI Use: Which workflow keeps appropriate human review, accountability, consent, documentation, and appeal for a high-impact decision? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-IC-25, 3B-IC-28. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Microcontrollers and Embedded Components: Which component-function match is correct for a microcontroller, processor, memory, power input, communication interface, and input-output pin? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-02, 3A-CS-01. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Sensors and Actuators: Which sensor or actuator best measures or changes the stated physical property? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Analog and Digital Input and Output: Which signal representation and input-output mode correctly match the device and required range of values? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-02, 3A-DA-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Basic Circuit Safety and Connections: Which circuit diagram correctly powers and protects the components with appropriate polarity, resistance, grounding, and shared connections? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Event Loops and Timing: Which program structure correctly reads inputs, updates state, controls outputs, and handles timing without unnecessary blocking? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-16, 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Sense-Plan-Act Robotics Cycle: Which sequence best describes how a robot senses its environment, selects an action, acts, and repeats based on feedback? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-16, 3B-AP-09. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Feedback and Control Systems: Which controller response best reduces the difference between a target value and measured output without unstable oscillation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-DA-12, 3B-DA-07. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Robot Coordinates and Motion: Which command or coordinate change moves or turns the robot to the requested location and orientation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3A-AP-15. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

IoT Architecture: Which diagram correctly connects sensors, edge devices, gateways, networks, cloud services, data stores, and user applications? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-04, 3A-DA-10. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Embedded Constraints: Which design best meets limits on power, memory, processing, latency, size, cost, and environmental conditions? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-02, 3B-AP-11. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Hardware-Software Troubleshooting: Which test best isolates whether a physical-computing failure comes from power, wiring, components, configuration, communication, or code? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-CS-03, 3B-CS-02. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

State Machines for Automation: Which state-transition diagram correctly represents the system's states, events, conditions, and actions? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-15, 3A-AP-16. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

IoT Security and Privacy: Which design change most reduces unauthorized control, exposed data, weak credentials, insecure updates, or unnecessary collection? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-NI-06, 3B-NI-04, 3A-IC-29. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Evaluating a Physical Computing Solution: Which evidence best demonstrates reliability, safety, usability, efficiency, maintainability, and success against design criteria? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3A-AP-21, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Evaluating Computing Innovations: Which evidence best supports a balanced evaluation of a computing innovation's purpose, users, data, benefits, risks, and affected groups? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Intended and Unintended Consequences: Which consequence is a plausible indirect, long-term, or unintended effect of deploying the proposed system? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Digital Divide and Access: Which factor most directly affects equitable access to devices, connectivity, skills, support, accessible design, or meaningful participation? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-IC-26. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Equity and Inclusive Design: Which change most effectively reduces a barrier or equity deficit for a historically excluded or underserved user group? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-25, 3B-IC-26. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Bias in Computational Systems: Which test or revision best detects or reduces unequal error rates, representation gaps, proxy discrimination, or harmful feedback loops? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-25, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Privacy, Tracking, and Surveillance: Which practice creates the greatest privacy concern based on consent, identifiability, purpose, retention, sharing, and power imbalance? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-29, 3A-IC-30. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Copyright, Fair Use, and Intellectual Property: Which use of code, media, text, or data is most consistent with the applicable permission, license, exception, and attribution requirement? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-28, 3A-AP-20. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Open Source and Creative Commons: Which license best permits or restricts copying, adaptation, commercial use, attribution, share-alike distribution, or source disclosure? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-20, 3A-IC-28. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Computer Misuse and Cyber Law: Which action is unauthorized, harmful, or legally risky even when performed with technical skill or curiosity? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-IC-28, 3A-NI-08. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Environmental Impacts of Computing: Which life-cycle factor most affects energy use, emissions, resource extraction, repairability, reuse, recycling, or electronic waste? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Automation and the Future of Work: Which claim about automation is best supported when productivity, task change, job displacement, new roles, training, and worker impact are considered? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3B-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Online Identity and Reputation: Which choice best protects a person's long-term digital identity while supporting authentic and professional participation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3A-IC-30. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Misinformation and Ranking Algorithms: Which verification step or system feature most directly addresses misleading content, amplification, personalization, or manipulated engagement? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-24, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Professional Codes of Ethics: Which action best follows professional duties involving public welfare, honesty, competence, privacy, fairness, security, and accountability? Selected-response concept practice with CSTA Revised 2017 supporting references 3B-IC-25, 3B-IC-28. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Inclusive Computing Culture: Which team practice most effectively supports participation, respectful feedback, shared credit, accessible collaboration, and diverse perspectives? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-27, 3B-IC-26. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Computing Careers and Pathways: Which education, certification, experience, or portfolio pathway best matches the responsibilities of the stated computing career? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Roles on a Computing Team: Which team role is primarily responsible for the stated task in product management, software development, data, cybersecurity, networking, design, testing, or operations? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-IC-27, 3A-AP-22. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Resume, Portfolio, and Interview Evidence: Which evidence most clearly demonstrates a candidate's skills, impact, collaboration, problem solving, ethical judgment, and ability to explain technical work? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3A-IC-27. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Capstone Problem Selection: Which proposed capstone problem has a clear user need, feasible scope, available data or resources, measurable criteria, and meaningful computing content? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-13, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Capstone Planning and Architecture: Which project plan best connects requirements, milestones, responsibilities, data, algorithms, interfaces, tests, risks, and documentation? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-22, 3A-AP-23, 3B-AP-17. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Capstone Evidence and Iteration: Which test result, user-feedback pattern, or defect report provides the strongest basis for the next revision? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-19, 3A-AP-21, 3B-AP-21. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.

Capstone Communication and Reflection: Which presentation most convincingly explains the problem, solution, technical decisions, evidence, limitations, ethics, attribution, and future improvements? Selected-response concept practice with CSTA Revised 2017 supporting references 3A-AP-23, 3B-IC-25. The local crosswalk is not CSTA-validated and should not be used as a formal alignment claim. Use Support/Performance_Task_Extensions.csv for authentic artifact evidence where the performance expectation requires creating, implementing, testing, documenting, demonstrating, or debating.