ITPEC IP October 2024 Question 16
ITPEC IP October 2024 — Question 16 of 100
Measures (1) and (4) provide redundancy that allows processing to continue after a component failure. Disk mirroring retains another copy when one HDD fails. A redundant power arrangement with UPS support protects the system from loss or interruption of the normal power source.
Measure (2) is inappropriate because reducing maintenance and inspection can allow faults to remain undiscovered. Measure (3), as worded, combines lines mainly to form one faster link; aggregation alone does not guarantee that the system can continue correctly after any partial failure unless failover is explicitly provided.
Answer (b)
Why not others: (a) and (c) include (3), while (c) and (d) include the unsafe reduction in maintenance (2).
Key rule: Fault tolerance requires independent redundancy plus detection and failover, not merely higher performance or less maintenance.
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