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ISTQB Test Analyst Exam Prep Exam Questions & Answers 2026 (21–30)

ISTQB Test Analyst Exam Prep practice questions and answers 2026. Tap an option to test yourself — you'll see the correct answer and a plain-English explanation for every question. Free, no login.

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  1. Q21Which of the following is the primary goal of conducting performance efficiency tests from a technical test analyst perspective?

    • ATo check if the system documentation is complete
    • BTo verify the functional correctness of the system
    • CTo ensure the system's user interface is intuitive
    • DTo determine if the system's response time, throughput, and resource utilization meet specified requirements
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    ✓ Correct answer: D. To determine if the system's response time, throughput, and resource utilization meet specified requirements

    Performance efficiency testing is conducted to evaluate how the system performs under various conditions, focusing on response times, throughput, and resource utilization as key metrics rather than functional behavior.

  2. Q22When conducting security testing, which approach is MOST appropriate for a technical test analyst to use when testing for SQL injection vulnerabilities?

    • AFunctional testing of database queries
    • BStatic code review of database schemas
    • CDynamic analysis with malicious SQL inputs
    • DUser acceptance testing with standard inputs
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    ✓ Correct answer: C. Dynamic analysis with malicious SQL inputs

    Dynamic analysis involves executing the application with malicious SQL inputs to see if they are executed by the database, which is the most effective way to detect actual SQL injection vulnerabilities.

  3. Q23Which reliability metric would be MOST useful for a technical test analyst to evaluate when testing a system that must operate continuously without failure?

    • ACode coverage percentage
    • BMean Time Between Failures (MTBF)
    • CNumber of test cases executed
    • DUser satisfaction score
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    ✓ Correct answer: B. Mean Time Between Failures (MTBF)

    Mean Time Between Failures (MTBF) specifically measures the average time between system failures, which is crucial for systems requiring continuous operation.

  4. Q24A technical test analyst is asked to evaluate the maintainability of a system. Which metric would provide the MOST value for this assessment?

    • ACyclomatic complexity of the code
    • BNumber of function points
    • CUser interface design consistency
    • DDatabase query performance
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    ✓ Correct answer: A. Cyclomatic complexity of the code

    Cyclomatic complexity measures the number of independent paths through code, providing insight into how difficult the code is to understand, test, and maintain. Higher complexity generally indicates lower maintainability.

  5. Q25During portability testing, a technical test analyst discovers that a software application fails when deployed to a different operating system. This is an example of a defect in which quality characteristic?

    • AReliability
    • BFunctionality
    • CUsability
    • DPortability
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    ✓ Correct answer: D. Portability

    Portability refers to the ability of software to be transferred from one environment to another. Failure when deployed to a different operating system directly impacts this quality characteristic.

  6. Q26Which of the following would be MOST appropriate for a technical test analyst to include in a security test plan?

    • APerformance testing under normal load conditions
    • BUsability testing with end users
    • CPenetration testing to identify exploitable vulnerabilities
    • DFunctional testing of business requirements
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    ✓ Correct answer: C. Penetration testing to identify exploitable vulnerabilities

    Penetration testing is specifically designed to identify security vulnerabilities by simulating attacks, making it a critical component of security test planning.

  7. Q27When testing the performance efficiency of a web application, which of the following metrics would be LEAST relevant for a technical test analyst to measure?

    • AResponse time under various load conditions
    • BBrand recognition
    • CCPU utilization during peak usage
    • DMemory consumption over time
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    ✓ Correct answer: B. Brand recognition

    Brand recognition is a marketing metric unrelated to the technical performance efficiency of a web application, unlike the other options which measure technical aspects of performance.

  8. Q28A technical test analyst is evaluating the compatibility of a web application across different browsers. Which testing approach would be MOST effective?

    • ACross-browser testing with automated tools
    • BCode reviews of HTML and CSS
    • CManual testing on a single browser
    • DPerformance testing of browser rendering speed
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    ✓ Correct answer: A. Cross-browser testing with automated tools

    Cross-browser testing with automated tools is most effective for compatibility testing across browsers as it can systematically verify application behavior and appearance across multiple browser environments efficiently.

  9. Q29During reliability testing of a financial system, which of the following would be MOST important for a technical test analyst to test?

    • AThe responsiveness of the help documentation
    • BThe visual appearance of the user interface
    • CThe system's ability to support multiple languages
    • DThe system's ability to recover from failures without data loss
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    ✓ Correct answer: D. The system's ability to recover from failures without data loss

    For financial systems, recovery from failures without data loss is critical to ensure transaction integrity and prevent financial discrepancies.

  10. Q30Which of the following would be the MOST appropriate approach for a technical test analyst to test the security of an authentication mechanism?

    • AEvaluating the visual design of the login form
    • BMeasuring the response time of the login page
    • CTesting for resistance to brute force attacks
    • DTesting the browser compatibility of the login page
    Show answer

    ✓ Correct answer: C. Testing for resistance to brute force attacks

    Authentication mechanisms need to be tested for resistance to brute force attacks, which directly tests the security strength of the password protection and account lockout features.

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