ITPEC IP October 2019 Question 14
ITPEC IP October 2019 — Question 14 of 100
Mirroring stores the same data on both HDDs, so the server can continue using the surviving copy if either one drive fails. With two disks this is the basic behavior of RAID 1, providing redundancy at the cost of half the raw capacity.
Answer (d)
Why not others:
- striping distributes data for performance but offers no redundancy when used without parity or mirroring
- data mining discovers patterns in data and is unrelated to disk fault tolerance
- tethering shares a network connection between devices
Key rule: Mirroring duplicates data across drives; either copy can serve reads when the other drive fails.
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