CompTIA XK0-005 Exam - Topic 3 Question 44 Discussion

Actual exam question for CompTIA's XK0-005 exam

Question #: 44
Topic #: 3

Users are reporting that a Linux server is responding slowly. A systems administrator troubleshooting the server issue sees the following iostat output, with %iowait at 50.38. Which of the following is most likely the issue?

AThe CPU is mostly waiting for I/O operations.

B/ filesystem does not have enough storage allocated.

C/var filesystem is almost full.

DThe CPU capacity is inadequate.

Show Suggested Answer

Suggested Answer: A

The %iowait value represents the percentage of time the CPU is waiting for I/O operations to complete. A high %iowait value suggests the system is bottlenecked by disk I/O, which could lead to slow response times. Addressing disk I/O bottlenecks would improve performance.

by Vilma at Oct 24, 2024, 10:20 AM

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Lawrence

3 months ago

Nah, I think it's more about the filesystem being full.

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Rikki

3 months ago

I thought CPU capacity was the main issue, but this makes sense too.

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Tamra

3 months ago

Wait, could it be a storage allocation problem instead?

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Marylyn

4 months ago

I agree, option A makes the most sense here.

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Tandra

4 months ago

Looks like %iowait is super high, definitely a I/O issue.

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Kenneth

4 months ago

I vaguely recall that inadequate CPU capacity could also lead to slow responses, but I think A is more likely based on the iostat output.

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Sanda

4 months ago

I practiced a similar question where high %iowait pointed to I/O issues, so I'm leaning towards A, but I could be wrong.

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Coral

4 months ago

I'm not entirely sure, but I feel like if the filesystem is full, it could also cause slowness. Maybe C is worth considering?

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Mona

5 months ago

I remember reading that a high %iowait indicates the CPU is waiting for I/O, so I think A might be the right choice.

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Marva

5 months ago

I'm a little confused by this question. Is there any other information we can use to narrow it down? The %iowait value alone doesn't seem like enough to determine the root cause. I'll have to review my notes on interpreting iostat output.

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Cornell

5 months ago

Okay, I know the %iowait metric is a key indicator of I/O performance issues. So I'm pretty confident option A is the correct answer here.

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Marci

5 months ago

Hmm, I'm a bit unsure here. The high %iowait could also mean the filesystem is running out of space, so I'm torn between A and C. I'll need to think this through carefully.

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