Functional Safety and Safety Culture CT-AUT Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   An automotive supplier is validating a safety mechanism for an airbag control unit. The safety mechanism is designed to detect a corrupted deployment command and suppress the deployment within 10 ms. The test team has access to a hardware-in-the-loop (HIL) test bench. Which test approach provides the most direct evidence that the safety mechanism meets its timing requirement?

   • AVerify that the safety mechanism is documented in the safety manual.
   • BPerform a code review of the safety mechanism's implementation to check for logical errors.
   • CRun a simulation of the algorithm in a software-only environment and record the number of test cases passed.
   • DInject a corrupted deployment command via the HIL interface and measure the time from injection to suppression of the output.
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A test team is working on a safety-critical system and has a culture where testers are encouraged to challenge assumptions. During a test design review, a junior tester questions whether a test case truly covers a safety requirement. The senior tester dismisses the concern, saying 'I've done this for years.' Which response best exemplifies a positive safety culture?

   • AThe senior tester explains that experience is the best guide and the test case is correct.
   • BThe senior tester re-evaluates the test case with the junior tester, and they jointly analyze the requirement coverage.
   • CThe junior tester is asked to document the concern but the test case is not changed.
   • DThe test case is escalated to the project manager for a decision.
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A company is developing an advanced driver assistance system (ADAS) and is in the early phases of the ISO 26262 safety lifecycle. The safety manager wants to ensure that testing activities are integrated from the beginning. Which activity is most appropriate to perform during the concept phase to support later testing?

   • AExecute the final system-level test cases on the production hardware.
   • BDevelop the software architecture and assign ASIL to each software component.
   • CConduct the safety validation on the completed vehicle.
   • DDefine the functional safety requirements and their acceptance criteria based on the safety goals.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which of the following is an example of testing evidence that could be used in a safety case?

   • AA list of known bugs that were not fixed
   • BA marketing brochure describing the vehicle's features
   • CA personal opinion from a senior engineer that the system is safe
   • DA test report showing that all safety-related test cases passed
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A test team is validating a safety mechanism that detects a stuck accelerator pedal and limits engine power. The mechanism has a diagnostic coverage of 90%. Which additional evidence is most important to include in the safety case to support the claim that the mechanism is effective?

   • AA document describing the mechanism's design and its intended behavior.
   • BThe results of a customer satisfaction survey about pedal feel.
   • CResults of fault injection tests showing that the mechanism detects the stuck pedal and limits power within the specified time.
   • DA statement from the project manager that the mechanism is complete.
   Reveal Solution Discussion Select an answer first