CompTIA
220-801 · Question #208
220-801 Question #208: Real Exam Question with Answer & Explanation
The correct answer is A: RAID 0. RAID 0 uses disk striping to spread I/O across multiple drives for maximum performance but provides zero fault tolerance - any single drive failure destroys all data.
Question
Which of the following levels of RAID is MOST likely to increase performance while NOT offering additional reliability?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 10
Explanation
RAID 0 uses disk striping to spread I/O across multiple drives for maximum performance but provides zero fault tolerance - any single drive failure destroys all data.
Common mistakes.
- B. RAID 1 mirrors data identically across two drives, providing full redundancy at the cost of usable capacity, with little to no performance gain on writes.
- C. RAID 5 stripes data with distributed parity, offering both improved read performance and fault tolerance for a single drive failure.
- D. RAID 10 combines mirroring and striping, providing both strong performance and fault tolerance, but at the cost of 50% usable capacity.
Concept tested. RAID 0 striping - performance without redundancy
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