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PMT4810 Preventive Medicine (PM) Practitioner Certification Practice Exam

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Which RAM metric refers to the ability to repair and restore after failure?
Correct Answer:
Maintainability
Explanation:
Maintainability is about how easily and quickly a system can be repaired and brought back into operation after a failure. It focuses on how repairable the design is, how good the diagnostics and documentation are, the ease of replacing parts, and the speed of the repair process (often reflected in metrics like mean time to repair). This directly captures the ability to repair and restore following a fault. Reliability measures the probability of operating without failure, availability is the proportion of time the system is up (influenced by both reliability and maintainability), and performance is about how well the system runs under load. So the metric describing repair and restoration after failure is Maintainability.

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