ITPEC IP April 2020 Question 14
ITPEC IP April 2020 — Question 14 of 100
RAID 5 and mirroring can recover data after one constituent disk fails, so I and III are correct. RAID 5 reconstructs missing data from distributed parity, while mirroring keeps a duplicate copy on another disk.
Answer (c)
Why not others:
- striping without parity divides data across disks but provides no redundancy
- if one disk in a simple striped set fails, part of every striped data sequence is lost
Key rule: Fault tolerance requires redundant information, such as a duplicate copy or parity; performance-oriented striping alone has none.
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