Safety-Related Systems CTAL-TTA Practice Questions (Page 7)

Questions 31–34

1. 31expert · hard

   A safety auditor for an IEC 61508 SIL 2 system finds that a safety requirement has a test case linked to it, but the test case was executed and failed. The defect was fixed, but the test was not re-executed. The test report states that the requirement is 'verified.' What is the most appropriate assessment by the Technical Test Analyst?

   • AThe requirement is verified because the defect was fixed, and the fix is documented.
   • BThe requirement is not verified because the test case did not pass after the fix was applied.
   • CThe requirement is verified because the defect fix was reviewed by a peer.
   • DThe requirement is verified because the test case is linked to it, satisfying traceability.
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2. 32application · medium

   A Technical Test Analyst must produce a test report for an ISO 26262 ASIL C system. Which element is most important to include to satisfy the standard's documentation expectations?

   • AA statement from the developers confirming that the code is complete.
   • BA summary of the test team's daily activities and hours worked.
   • CA description of the test environment, including the operating system version.
   • DA list of all test cases with their pass/fail status and links to the requirements they verify.
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4. 33foundation · medium

   Which white-box testing technique is particularly valuable for safety-related systems because it tests the logic of each decision?

   • AExploratory testing
   • BLoad testing
   • CUsability testing
   • DDecision testing
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5. 34application · medium

   During a safety assessment, the auditor asks whether the team has performed validation of the system. The team has executed all verification tests and they passed. What is the most appropriate response?

   • AState that validation is not required because the system passed verification.
   • BState that validation is complete because all verification tests passed.
   • CExplain that validation is a separate activity that checks the system meets user needs, and confirm whether it has been performed.
   • DAsk the developers to confirm that the system meets user needs.
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