ISTQB CTFL CERTIFICATION EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS LATEST VERSION 2025/2026.
What is Software Testing? - ANS Software testing is a process to assess the quality of software
and reduce the risk of operational failure. It includes activities such as test execution, planning,
analysis, design, reporting progress/results, and evaluating test quality.
What are the typical objectives of testing? - ANS Objectives of testing include:
-Evaluating requirements, user stories, and code.
-Verifying that all requirements are met.
-Validating the system for stakeholders.
-Building confidence in quality.
-Preventing defects.
-Identifying failures and defects.
-Reducing the risk of quality issues.
-Ensuring compliance with standards.
What is the difference between Testing and Debugging? - ANS -Testing: A systematic process
to identify and report defects; testing doesn't involve fixing defects.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,-Debugging: A development activity where defects are found, analyzed, and fixed. Confirmation
testing then checks if these fixes work as intended.
Why is testing necessary? - ANS Testing helps:
-Reduce the risk of software failure.
-Ensure compliance with legal and industry standards.
-Avoid losses in money, time, and reputation.
-Prevent possible injuries or deaths due to software malfunctions.
How does testing contribute to project success? - ANS Involving testers early in reviews and
design can:
-Identify defects before they become bigger issues.
-Increase understanding between testers, designers, and developers.
-Enhance software quality by removing defects early in the process.
What is the relationship between Quality Assurance (QA) and Testing? - ANS -Quality
Assurance: Focuses on following processes to ensure quality levels are achieved, using activities
like root cause analysis.
-Testing: Part of quality control, ensuring proper functioning and defect identification within the
software development process.
What are Errors, Defects, and Failures? - ANS -Error: Human mistake that leads to a defect.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, -Defect: Result of an error, which can cause failures.
-Failure: The system does not perform as expected due to a defect. Specific conditions or inputs
may be needed to trigger a failure.
What are common causes of errors in software development? - ANS Errors may arise from:
-Time pressure.
-Human error or inexperience.
-Miscommunication on requirements or design.
-Complexity in code or design.
-Misunderstandings of inter-system interactions.
What are False Positives and False Negatives in testing? - ANS -False Positive: A reported
defect that isn't actually a defect, often due to issues in the test environment or data.
-False Negative: A test fails to detect an actual defect, meaning a defect goes unnoticed.
Why is identifying the root cause of a defect important? - ANS Identifying root causes helps:
-Prevent similar defects in the future.
-Improve processes by addressing underlying issues, rather than just the symptoms.
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS WITH 100% CORRECT
ANSWERS LATEST VERSION 2025/2026.
What is Software Testing? - ANS Software testing is a process to assess the quality of software
and reduce the risk of operational failure. It includes activities such as test execution, planning,
analysis, design, reporting progress/results, and evaluating test quality.
What are the typical objectives of testing? - ANS Objectives of testing include:
-Evaluating requirements, user stories, and code.
-Verifying that all requirements are met.
-Validating the system for stakeholders.
-Building confidence in quality.
-Preventing defects.
-Identifying failures and defects.
-Reducing the risk of quality issues.
-Ensuring compliance with standards.
What is the difference between Testing and Debugging? - ANS -Testing: A systematic process
to identify and report defects; testing doesn't involve fixing defects.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,-Debugging: A development activity where defects are found, analyzed, and fixed. Confirmation
testing then checks if these fixes work as intended.
Why is testing necessary? - ANS Testing helps:
-Reduce the risk of software failure.
-Ensure compliance with legal and industry standards.
-Avoid losses in money, time, and reputation.
-Prevent possible injuries or deaths due to software malfunctions.
How does testing contribute to project success? - ANS Involving testers early in reviews and
design can:
-Identify defects before they become bigger issues.
-Increase understanding between testers, designers, and developers.
-Enhance software quality by removing defects early in the process.
What is the relationship between Quality Assurance (QA) and Testing? - ANS -Quality
Assurance: Focuses on following processes to ensure quality levels are achieved, using activities
like root cause analysis.
-Testing: Part of quality control, ensuring proper functioning and defect identification within the
software development process.
What are Errors, Defects, and Failures? - ANS -Error: Human mistake that leads to a defect.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, -Defect: Result of an error, which can cause failures.
-Failure: The system does not perform as expected due to a defect. Specific conditions or inputs
may be needed to trigger a failure.
What are common causes of errors in software development? - ANS Errors may arise from:
-Time pressure.
-Human error or inexperience.
-Miscommunication on requirements or design.
-Complexity in code or design.
-Misunderstandings of inter-system interactions.
What are False Positives and False Negatives in testing? - ANS -False Positive: A reported
defect that isn't actually a defect, often due to issues in the test environment or data.
-False Negative: A test fails to detect an actual defect, meaning a defect goes unnoticed.
Why is identifying the root cause of a defect important? - ANS Identifying root causes helps:
-Prevent similar defects in the future.
-Improve processes by addressing underlying issues, rather than just the symptoms.
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
