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Cisco 200-301 Exam - Topic 1 Question 121 Discussion

A client experiences slow throughput from a server that is directly connected to the core switch in a data center. A network engineer finds minimal latency on connections to the server, but data transfers are unreliable, and the output of the show Interfaces counters errors command shows a high FCS-Err count on the interface that is connected to the server. What is the cause of the throughput issue?
B) a physical cable fault
A) high bandwidth usage
C) a speed mismatch
D) a cable that is too long

Cisco 200-301 Exam - Topic 1 Question 121 Discussion

Actual exam question for Cisco's 200-301 exam
Question #: 121
Topic #: 1
[All 200-301 Questions]

A client experiences slow throughput from a server that is directly connected to the core switch in a data center. A network engineer finds minimal latency on connections to the server, but data transfers are unreliable, and the output of the show Interfaces counters errors command shows a high FCS-Err count on the interface that is connected to the server. What is the cause of the throughput issue?

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Suggested Answer: B

by Truman at Apr 12, 2026, 01:35 PM

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Eladia
3 days ago
I feel like B is the strongest option. Fix the cable, fix the problem!
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Luisa
8 days ago
D) a cable that is too long could also be a factor, but less likely.
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Jolene
13 days ago
But the FCS-Err points more to a physical issue. B makes sense.
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Fabiola
19 days ago
I lean towards C) a speed mismatch. Could be settings off on devices.
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Jules
24 days ago
Agreed! A faulty cable can cause unreliable data transfers.
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Dorian
29 days ago
I think it's B) a physical cable fault. High FCS-Err suggests issues there.
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Bobbye
1 month ago
Yeah, I agree, it's probably the cable.
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Lonny
1 month ago
Wait, could it really be a cable fault? That seems odd.
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Arlene
1 month ago
I think it could also be a speed mismatch.
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Buffy
2 months ago
Definitely a cable issue, high FCS-Err is a red flag!
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Jose
2 months ago
Sounds like a physical cable fault to me.
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Stephaine
2 months ago
Yeah, I agree, it's probably the cable.
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Marta
2 months ago
Wait, could it really be a cable fault? That seems odd.
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Malika
2 months ago
I think it could also be a speed mismatch.
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Olive
4 months ago
Definitely a cable issue, high FCS-Err is a red flag!
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Hillary
4 months ago
Sounds like a physical cable fault to me.
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Margart
5 months ago
I recall something about cable length affecting performance, but I don't think that's the main issue here with the FCS errors.
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Alfreda
5 months ago
I practiced a question similar to this, and I think high bandwidth usage was ruled out because latency was minimal.
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Frank
5 months ago
I’m not entirely sure, but I feel like a speed mismatch could also cause unreliable data transfers.
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Jimmie
5 months ago
I remember studying about FCS errors, and I think they usually indicate a physical layer issue, so maybe it's a cable fault?
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