Functional Safety and Safety Culture CT-AUT Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A safety manager is compiling the safety case for a brake-by-wire system. The test team has executed a comprehensive set of tests, but the manager notices that several test reports are missing the version of the software under test and the test environment configuration. What is the most important reason to correct this before including the evidence in the safety case?

   • AThe test reports must be formatted according to the company's document template.
   • BThe safety case is a legal document that requires a notary signature.
   • CThe safety case must demonstrate that the evidence is traceable to a specific software version and environment to be valid.
   • DThe test reports are needed to calculate the test coverage percentage.
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2. 2application · medium

   During the concept phase of a new electric power steering (EPS) system, the hazard analysis identifies 'unintended steering torque application' as a hazardous event with ASIL D classification. The safety goal derived is 'The system shall not apply unintended steering torque.' The safety team is now defining functional safety requirements. Which requirement is most directly traceable to this safety goal and appropriate for the system level?

   • AThe EPS shall detect a torque sensor signal plausibility failure within 50 ms and transition to a safe state.
   • BThe torque sensor shall be qualified to AEC-Q100 Grade 0 temperature specifications.
   • CThe EPS shall be tested with a fault injection campaign on the torque sensor line.
   • DThe software shall be developed according to ISO 26262 Part 6 with ASIL D practices.
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4. 3application · medium

   A safety engineer is deriving test cases from a functional safety requirement: 'The battery management system shall disconnect the battery within 100 ms of detecting overcurrent.' Which test case is most appropriate to verify this requirement?

   • ACheck that the battery is labeled with the correct part number.
   • BInject an overcurrent condition and measure the time until the battery is disconnected.
   • CVerify that the battery management system software is compiled with the correct compiler version.
   • DTest the battery's capacity to hold a charge over time.
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5. 4foundation · easy

   How is the validation of a safety mechanism typically performed?

   • ABy testing only under normal operating conditions
   • BBy reviewing the code without executing it
   • CBy injecting faults and observing that the mechanism responds correctly
   • DBy asking the customer to confirm the mechanism is safe
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6. 5application · medium

   A test manager at an automotive OEM notices that testers are hesitant to report minor anomalies in a braking system's software because the project is behind schedule and management has emphasized meeting the release date. The test manager wants to strengthen the safety culture. Which action is most effective in encouraging the reporting of safety-relevant issues?

   • AIncrease the number of test cases executed per day to find more issues quickly.
   • BRemind testers that the safety case depends on their test evidence.
   • CAssign a senior engineer to review all test results before they are reported.
   • DEstablish a non-punitive reporting process where testers can log anomalies without fear of blame, and review them in a safety forum.
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