ITPEC IP April 2026 Question 15
ITPEC IP April 2026 — Question 15 of 100
Measures (1) and (4) — disk mirroring and redundant power both let processing continue after a component failure.
- •(1) Mirroring keeps the same data on another HDD, so one disk can take over if its partner fails.
- •(4) A UPS and redundant power arrangements maintain power when a supply or external source fails.
Answer (b)
Why not others:
- (2) reduces maintenance and inspection, which makes failures less likely to be found and does not add redundancy
- (3) combines redundant lines into one faster logical line, but the statement does not ensure independent failover; its stated objective is speed rather than continued operation
- (a), (c), and (d) each include either (2) or (3), so they do not contain only appropriate continuity measures
Key rule: Fault tolerance requires redundant components and a way for an alternative component to continue the service when one part fails.
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