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server-hardware-installation-managementeasyMultiple ChoiceObjective-mapped

SK0-005 server-hardware-installation-management Practice Question

Network Topology
[root@server ~]# mdadmdetail /dev/md0/dev/md0:Version1.2Raid Level : raid5Raid Devices : 4Total Devices : 3PersistenceSuperblock is persistentStateclean, degradedActive Devices : 3Working Devices : 3Failed Devices : 1Spare Devices : 0Layoutleft-symmetricChunk Size : 512KNameserver:0 (local to host server)UUID5a2c3b1d:9e7f4a6c:8d0f1e2b:3c4a5b6dEvents24836Number Major Minor RaidDevice State2 0 0 2 removed

Refer to the exhibit. A server technician sees the following output. What is the current status of the RAID array?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Degraded

The 'State' line clearly indicates 'clean, degraded', and one device is marked as 'removed'. The array is operational but missing a drive.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Rebuilding

    Why it's wrong here

    Rebuilding status would show a progress percentage and a 'recovering' state. The output shows no such activity.

  • Degraded

    Why this is correct

    'State : clean, degraded' and a 'removed' device confirm the array is running in a degraded mode without full redundancy.

  • Healthy

    Why it's wrong here

    A healthy array would show all devices active and no 'degraded' state. Here, a drive is missing.

  • Failed

    Why it's wrong here

    A failed array would have a state of 'failed' and insufficient active devices to remain operational. This array is still functional.

Quick reference

RAID Level Comparison

RAID LevelMin DisksFault ToleranceReadWriteUsable Capacity
RAID 02NoneExcellentExcellent100%
RAID 121 diskGoodModerate50%
RAID 531 diskGoodModerate67–94%
RAID 642 disksGoodLower50–88%
RAID 1041 disk per mirrorExcellentGood50%

RAID is not a backup strategy — it protects against disk failure but not against accidental deletion, ransomware, or site-level events.

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Last reviewed: Jul 26, 2026

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This SK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SK0-005 exam.