ITPEC FE Morning October 2019 Question 15

Source exam: ITPEC FE Morning October 2019Topic: Computer Systems & Hardware

ITPEC FE Morning October 2019 — Question 15 of 80

Fault-Tolerant System — a system that continues operating despite component failures.

The key to fault tolerance is redundancy — duplicating components so that if one fails, another takes over seamlessly.

  • •(a) Logging/journaling — records change history to investigate and recover after failure; does not keep the system running during failure
  • •(b) Fool-proof design — prevents human operational errors from causing fatal outcomes; addresses operator mistakes, not hardware/software faults
  • •(c) Backup & recovery — periodic data backups allow restoration after failure; system is still down during the failure itself
  • •(d) Redundancy — duplicate components minimize impact of part failures so processing continues uninterrupted ✓

Key rule: Fault-tolerant = redundancy. Logging, fool-proofing, and backups are valuable but solve different problems (investigation, prevention, recovery).

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