ITPEC FE Subject A April 2024 Question 11
ITPEC FE Subject A April 2024 — Question 11 of 60
Foolproof Design — a system designed so that user errors do not cause problems.
Foolproof = the system prevents incorrect user operations from causing failures.
- •Example: a USB connector that physically cannot be inserted the wrong way
Why not others:
- (a) Fault tolerance — uses redundancy (duplication) so device failures don't affect the system
- (c) Fail-safe — on failure, the system stops safely to minimize damage
- (d) Fail-soft (graceful degradation) — on failure, the system continues running with reduced functionality
Key rule: Foolproof protects against user mistakes, not hardware failures.
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