Which of these is not a way to improve safety-critical software?

Question

BlackTom AI · Accepted Answer

Let's examine each option in turn to determine whether it describes a way to improve safety-critical software.
Option a: 'Focus on computer failure detection after software deployment, rather than prevention.' This emphasizes detecting failures after the software is already deployed, which is a reactive approach. While fault detection after release can be useful, it does not prevent failures from occurring in the first place, and in safety-critical contexts prevention and failure avoidance are typically prioritized. Therefore, this is not a preventive or proactive improvement strategy.
Option b: 'Better education and training of engineers, programmers and analysts.' Improving the skills and knowledge of the development team directly contributes to producing safer software by reducing human error, improving decision making, and promoting best practices. This is a recognized way to enhance safety in software engineering.
Option c: 'Use of simulation in testing.' Simulation allows testing under realistic yet controlled conditions, enabling the discovery of safety-critical issues that might not appear in simple test cases. It is a proactive technique to improve software safety.
Option d: 'More sophisticated software testing procedures.' Advanced testing methodologies (e.g., formal methods, rigorous integration and regression testing) help identify defects early and ensure reliability, which is central to safety-critical systems. This is also a preventive improvement.
In summary, the statement in option a describes a reactive approach (detection after failure) rather than a preventive improvement method, whereas options b, c, and d describe proactive strategies that enhance safety through prevention, preparation, and rigorous verification.

Professional Ethics in Computing (COMP3056 UNNC) (AUC1 25-26) Quiz 5: Trust, Safety & Reliability

Which of these is not a way to improve safety-critical software?

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