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Exam CTFL v4.0 All Questions

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Exam CTFL v4.0 topic 1 question 30 discussion

Actual exam question from ISTQB's CTFL v4.0
Question #: 30
Topic #: 1
[All CTFL v4.0 Questions]

Which testing principle provides a good reason to base testing upon risk mitigation priorities?

  • A. Testing shows the presence of defects
  • B. Exhaustive testing is impossible
  • C. Tests wear out
  • D. Defects tend to cluster in a few modules
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Suggested Answer: B 🗳️

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elen4eabv
4 months, 3 weeks ago
Can someone explain the answer? For me D is more logical answer since it more closely explains the need for focusing testing efforts on areas where the potential impact of defects is highest, thus aligning with risk mitigation priorities.
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MARIAPITA
1 month ago
D. Defects Tend to Cluster in a Few Modules: While this principle is related to focusing testing efforts on modules where defects are more likely to be found, it is a specific manifestation of the broader concept that exhaustive testing is not feasible, and thus, testing should be prioritised based on risk. So, both principles support the idea of prioritising testing based on risk, though they do so from slightly different perspectives. The principle that exhaustive testing is impossible highlights that we cannot test everything due to time, resource, and practical limitations. This limitation leads us to prioritise testing based on risk mitigation. By focusing on the highest-risk areas first, we can ensure that testing efforts are concentrated on the most critical parts of the application, helping to uncover potential defects more effectively in these key areas.
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