The design concept of ensuring that incorrect human operation does not lead to a hazardous state or malfunction, or that incorrect operation is not possible in the first place. Examples include connectors shaped so that they cannot be inserted the wrong way round and equipment that does not start unless its door is closed.
Japanese name: フールプルーフ
Fool-proof appears in 1 practice question across 1 topic, including System Architecture and Reliability.
Answer: C. Making a connector's shape asymmetric so that it cannot be inserted the wrong way round
Fool-proofing is the design concept of ensuring that incorrect human operation does not lead to a hazardous state or malfunction, or that incorrect operation is not possible in the first place. A connector shaped so that it cannot be inserted the wrong way round is a typical example that physically prevents a wrong connection. Writing data to two disks is fault tolerance through redundancy, and reducing failures through regular inspection and replacement is the fault-avoidance concept.
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Fault tolerance Differential backup Dual system Duplex system Fail-safe Fail-soft Hot standby Incremental backup Load balancer RAID