ITPEC IP October 2019 Question 15
ITPEC IP October 2019 — Question 15 of 100
HDD mirroring and redundant power through a UPS both allow normal processing to continue after a component or power failure. Mirroring preserves access after one disk fails, while a UPS supplies temporary power during an outage and supports an orderly transition or shutdown.
Answer (b)
Why not others:
- reducing maintenance and inspection weakens reliability rather than improving it
- combining lines only to form one higher-speed link is described as a performance measure, not necessarily independent failover redundancy
Key rule: Fault tolerance requires independent redundant resources that can take over when a component fails.
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