Exam SK0-005 topic 1 question 167 discussion

Actual exam question from CompTIA's SK0-005

Question #: 167
Topic #: 1

An administrator is investigating a physical server that will not boot into the OS. The server has three hard drives configured in a RAID 5 array. The server passes
POST, but the OS does not load. The administrator verifies the CPU and RAM are both seated correctly and checks the dual power supplies. The administrator then verifies all the BIOS settings are correct and connects a bootable USB drive in the server, and the OS loads correctly. Which of the following is causing the issue?

A. The page file is too small.
B. The CPU has failed.
C. There are multiple failed hard drives.
D. There are mismatched RAM modules.
E. RAID 5 requires four drives.

Show Suggested Answer

Suggested Answer: C 🗳️

by Pongsathorn at Nov. 11, 2022, 8:24 a.m.

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gingasaurusrex

6 months, 3 weeks ago

Selected Answer: C

Based on the information provided, it is likely that the issue is related to the hard drives or the RAID configuration. The fact that the server passes POST and that the OS loads correctly from a bootable USB drive suggests that the CPU, RAM, and BIOS settings are not the cause of the issue. Since the server has three hard drives configured in a RAID 5 array, it is possible that one or more of the hard drives has failed, which would prevent the OS from loading. RAID 5 requires at least three hard drives to operate, but can tolerate one drive failure without data loss. However, if two or more drives fail, the array will be unable to function. It is also possible that there is an issue with the RAID controller or the RAID configuration itself, which could be preventing the OS from loading. In any case, further investigation and testing will be needed to determine the exact cause of the issue.

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Pongsathorn

12 months ago

Selected Answer: C

RAID 5 Disk Striping with Parity This RAID 5 design provides a good balance between performance, redundancy, and cost-effective capacity. Data is distributed across the stripes on the disks, as with RAID 0, but additional parity information is also written to the disks, which permits data to be recreated if one of the drives in the array fails. RAID 5 is a good general solution for most servers, though the performance of its writes is dependent on the RAID controller used. RAID 5 requires a minimum of three HDDs. The Official CompTIA Server+ Study Guide (Exam SK0-005) page 114.

upvoted 1 times

Pongsathorn

12 months ago

RAID 6 Disk Striping with Double Parity The RAID 6 design distributes data across a minimum of four HDDs the same way that RAID 0 and RAID 5 do, but it also distributes parity information across two disks. The result is that a RAID 6 array can recover data even with the failure of two HDDs. Reads are quick, like RAID 5, but writes are slower due to the duplication of the parity data. It is a good general solution as long as the performance hit on write tasks is not a problem for your environment. RAID 6 requires a minimum of four HDDs. The Official CompTIA Server+ Study Guide (Exam SK0-005) page 114.

upvoted 1 times

Obi_Wan_Jacoby

9 months, 1 week ago

Well, they are talking about Raid 5 here, not 6. Raid 5 needs 3 drives but can take 1 going down. If 2 drives fail, then that data is gone, thus no OS to boot to. In this case, the array (Raid 5) has at least 2 drives that have failed. therefore, answer is C

upvoted 2 times

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Exam SK0-005 topic 1 question 167 discussion

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