CompTIA Exam XK0-005 Topic 3 Question 26 Discussion

Actual exam question for CompTIA's XK0-005 exam

Question #: 26
Topic #: 3

Users are experiencing high latency when accessing a web application served by a Linux machine. A systems administrator checks the network interface counters and sees the following:

Which of the following is the most probable cause of the observed latency?

AThe network interface is disconnected.

BA connection problem exists on the network interface.

CNo IP address is assigned to the interface.

DThe gateway is unreachable.

Show Suggested Answer

Suggested Answer: B

The high number of errors and dropped packets in the output of the network interface counters indicate a connection problem on the network interface.

CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 10: Managing Networking, Section: Troubleshooting Network Issues, Page 359.

Linux+ (Plus) Certification, Exam Objectives: 4.3 Given a scenario, troubleshoot and resolve basic network configuration and connectivity issues.

by Ettie at Apr 11, 2024, 12:55 PM

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Jacquelyne

5 days ago

Haha, yeah, the old 'blame the hardware' trick. Classic IT exam question. But in this case, I think you guys are right - B is the most likely culprit. Though I have to say, if I was the sysadmin, I'd be double-checking all the cables and switch ports first before jumping to any conclusions.

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Leanna

5 days ago

Hmm, good point. The gateway being unreachable could definitely be a factor. But I still think the connection problem is the most likely explanation. It's like the network interface is trying to play traffic cop, but just can't keep up with all the cars (or packets) trying to get through.

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Gregoria

6 days ago

I agree with you both. D - the gateway being unreachable - is also a possibility, but the network interface stats point more towards a local connection problem. Though I have to admit, I'm a little surprised they didn't include an option about high CPU or memory usage on the server. That can also cause latency, you know.

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Von

7 days ago

I don't know, guys. What if the gateway is just MIA? Option D seems plausible to me. I mean, if the gateway's not responding, that could definitely cause some major latency issues.

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Tarra

7 days ago

You know, I was just thinking the same thing. The RX errors and collisions are a dead giveaway that there's something wrong with the network connection. It's probably not a disconnect or IP address issue, since those would show different metrics.

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Adria

8 days ago

Hmm, this is a tricky one. The high latency could be due to a few different issues, but I'm leaning towards B - a connection problem on the network interface. Those counter values seem to indicate some kind of network congestion or errors.

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Lenna

8 days ago

Yeah, the collision count is definitely interesting. Maybe the network interface is just a bit too crowded, like a busy highway during rush hour. But I still think option B is the best answer based on the information provided.

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Rossana

9 days ago

Collisions, huh? Sounds like this network interface is having a bit of a 'collision course' with high latency! (chuckles) But in all seriousness, I think you two are on the right track. Connection problem seems like the most likely culprit here.

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Chauncey

11 days ago

I agree with you, option B seems like the way to go. Although, I'm a bit curious about the high amount of collisions. That could also be a clue to the issue.

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Melvin

13 days ago

Hmm, this question seems straightforward enough. I'm leaning towards option B as the most probable cause. The high number of errors and dropped packets suggests some kind of connection problem on the network interface.

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