Contribution of the Test Analyst to Defect Prevention CTAL-TA Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A test analyst is using the '5 Whys' technique to find the root cause of a defect. The analyst has asked 'why' five times and arrived at 'the developer did not understand the requirement'. The analyst knows that the developer is experienced and has a good track record. What is the most likely issue with this root cause analysis, and what should the analyst do next?

   • AThe analysis is complete; the root cause is the developer's lack of understanding, and the prevention is to provide more training.
   • BThe analyst should reclassify the defect as a 'training' defect and close the analysis.
   • CThe '5 Whys' technique is not appropriate for this type of defect; the analyst should use a fishbone diagram instead.
   • DThe analysis stopped too early; the analyst should continue asking 'why' to understand why the developer did not understand the requirement, such as a poorly written requirement or lack of clarification.
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2. 22application · medium

   A test analyst notices that several defects reported in the last two sprints all originated from the same module. The defects occur only when the user enters special characters in a search field, and the development team has fixed each one individually without identifying a common cause. The analyst wants to prevent this class of defects from recurring. Which action is most aligned with the test analyst's role in defect prevention?

   • AAsk the developer who wrote the module to attend additional training on secure coding practices.
   • BReport the defects as a single merged defect to reduce the defect count and improve the team's quality metrics.
   • CConduct a root cause analysis session with the development team to identify the underlying input-validation flaw and propose a shared validation utility.
   • DIncrease the number of test cases with special characters in the regression suite to catch more instances of this defect in future releases.
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4. 23expert · hard

   A test analyst is part of a process improvement team. The team's goal is to reduce defects found in system testing. The analyst has data showing that 60% of system testing defects are due to incorrect business rules, and that these defects are often found in features that were not reviewed by the business analyst. The team is considering two initiatives: (1) implementing a formal requirements review process, and (2) increasing the number of testers in system testing. Which recommendation best reflects the test analyst's role in defect prevention?

   • ARecommend initiative 2, because more testers will find more defects and reduce the number that escape to production.
   • BRecommend initiative 1, because the data shows the root cause is in requirements, and prevention should focus on the earliest phase where defects are introduced.
   • CRecommend both initiatives equally, as they both contribute to reducing defects in system testing.
   • DRecommend neither initiative and instead suggest a new test automation tool to speed up system testing.
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5. 24foundation · easy

   Why is classifying defects by type and pattern useful for defect prevention?

   • AIt reduces the need for regression testing by eliminating defect-prone areas
   • BIt ensures that all defects are fixed before the next release
   • CIt allows the team to identify recurring root causes and target preventive actions
   • DIt helps in assigning defects to the most experienced testers for resolution
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6. 25foundation · easy

   How does risk-based testing contribute to defect prevention?

   • ABy eliminating the need for regression testing
   • BBy focusing testing effort on areas with the highest risk of defects
   • CBy ensuring that all test cases are executed regardless of risk
   • DBy focusing only on low-risk areas to build confidence
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