CompTIA A+ Core 1 (220-1001) — Question 179

An administrator notices the RAID 5 array is reporting a degraded health message. It contains three HDDs. A technician replaces the faulty HDD with a new one, but users then report access to the fileshare is not as fast as it used to be. Which of the following is MOST likely preventing the RAID array from operating optimally?

Answer options

• A. The mirrored set is broken.
• B. Write caching has been turned on.
• C. The wrong drive was replaced.
• D. The RAID array is rebuilding.

Correct answer: C

Explanation

The most probable reason for the RAID array's suboptimal performance is that the wrong drive was replaced, which can lead to improper data reconstruction and slower access. The other options do not directly relate to the performance impact following a drive replacement. Specifically, a broken mirrored set and write caching settings would not typically result from the drive replacement process itself.