CompTIA
220-802 · Question #342
220-802 Question #342: Real Exam Question with Answer & Explanation
The correct answer is A: RAID 0. RAID 0 uses striping with no redundancy, so a single failing drive causes random data corruption across the array with no fault tolerance.
Question
A technician is working on a PC that utilizes a RAID array for operation. The user of the system has reported that random files are becoming corrupted on creation with no pattern to the activity. One drive in the array is likely failing and causing the read/write failures. Which of the following types of RAID is MOST likely in use?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 10
Explanation
RAID 0 uses striping with no redundancy, so a single failing drive causes random data corruption across the array with no fault tolerance.
Common mistakes.
- B. RAID 1 mirrors data across two drives, so a single drive failure does not corrupt files - the mirror continues to serve data intact.
- C. RAID 5 uses distributed parity across three or more drives and can survive one drive failure without data loss or corruption.
- D. RAID 10 combines mirroring and striping and can tolerate at least one drive failure per mirrored pair without causing file corruption.
Concept tested. RAID 0 striping and lack of fault tolerance
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