Among the approaches to improving system reliability, which corresponds to fault avoidance?

Answer: A. Choosing highly reliable parts and removing those likely to cause early failures by screening (such as burn-in) before shipment, so that failures themselves are less likely

Fault avoidance is the approach of making failures themselves less likely through high-quality parts, thorough testing and screening, and preventive maintenance. Screening such as burn-in is done to remove, before shipment, the failures that belong to the early failure period of the bathtub curve. In contrast, fault tolerance accepts that failures will occur and keeps the function despite them, for example through redundancy. Going into a safe state on failure is the fail-safe concept.

• A. Correct. This is the approach of making failures themselves less likely.
• B. This is fault tolerance, keeping the function despite failures.
• C. This is the fail-safe concept.