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VMware 5V0-21.21 Exam - Topic 4 Question 75 Discussion

As a part of a network hardware refresh project, all the network switches have been replaced with a newer, high-performance model. After the replacement, the company users started experiencing slowness on the applications hosted on their vSAN-backed VMs.The vSAN administrator checked the vSAN Network Health status and noticed that the "Hosts large ping test" has failed.What could be the cause of this performance degradation issue?
C) MTU 9K is not configured on the ToR switch.
A) MTU 9K is not configured on the hosts vSAN vMKernel ports.
B) MTU 9K is not configured on the hosts VMnic ports.
D) MTU 9K is not configured on the vDS switch.

VMware 5V0-21.21 Exam - Topic 4 Question 75 Discussion

Actual exam question for VMware's 5V0-21.21 exam
Question #: 75
Topic #: 4
[All 5V0-21.21 Questions]

As a part of a network hardware refresh project, all the network switches have been replaced with a newer, high-performance model. After the replacement, the company users started experiencing slowness on the applications hosted on their vSAN-backed VMs.

The vSAN administrator checked the vSAN Network Health status and noticed that the "Hosts large ping test" has failed.

What could be the cause of this performance degradation issue?

Show Suggested Answer Hide Answer
Suggested Answer: C

https://kb.vmware.com/s/article/2108285


by Ressie at Dec 07, 2024, 02:04 AM

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Ronny
10 months ago
Wait, are we sure it's not a different problem?
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Judy
10 months ago
I agree, it's probably the vDS switch.
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Octavio
10 months ago
I thought the vSAN would handle that automatically?
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Shenika
11 months ago
Definitely check the ToR switch settings!
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Lasandra
11 months ago
Sounds like a classic MTU issue.
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Tennie
11 months ago
I’m leaning towards the vDS switch configuration being the issue. I recall a case study where mismatched MTU settings caused major slowdowns.
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Cecilia
11 months ago
I think it could also be related to the VMnic ports. I remember reading that if those aren't set correctly, it can impact performance too.
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Flo
11 months ago
I'm not entirely sure, but I feel like the ToR switch MTU configuration might be the key here. We had a similar question about switch settings last week.
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Julieta
12 months ago
I remember we discussed MTU settings in class, and I think if the vSAN vMKernel ports don't have MTU 9K configured, it could definitely cause issues.
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Malcolm
12 months ago
I'm a bit unsure here. Could be the vDS switch, the VMnic ports, or the vSAN vMKernel ports that need the 9K MTU. I'll have to think through the network topology to determine the most likely culprit.
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Art
12 months ago
Okay, this seems straightforward. The new network switches were installed, so the MTU configuration must not have been updated properly. I'll go with option C - the ToR switch needs the 9K MTU set.
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Ozell
12 months ago
Hmm, the "Hosts large ping test" failing points to a network problem. I'm guessing it's either the vSAN vMKernel ports or the ToR switch that needs the 9K MTU configured.
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Tricia
12 months ago
This looks like a networking issue related to the MTU configuration. I'll need to carefully review the options and think through the vSAN network setup to determine the most likely cause.
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Heike
2 years ago
I love how these questions always throw in a little humor. 'Hosts large ping test' - who comes up with these names? Anyway, I think it's B.
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Lauran
2 years ago
I'm going with A. Those vMKernel ports are the gateway for the vSAN network, so they better be configured for 9K MTU.
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Rolland
2 years ago
Haha, I bet it's D. The vDS switch is the heart of the virtual network, and if that's not set up right, everything falls apart!
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Bette
2 years ago
B sounds like the culprit to me. The VMnic ports need to be configured for 9K MTU to handle the vSAN traffic properly.
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Claribel
2 years ago
C) MTU 9K is not configured on the ToR switch.
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Sylvie
2 years ago
B) MTU 9K is not configured on the hosts VMnic ports.
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Youlanda
2 years ago
A) MTU 9K is not configured on the hosts vSAN vMKernel ports.
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Jackie
2 years ago
I don't think so, because the vSAN Network Health status showed that the 'Hosts large ping test' has failed.
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Mayra
2 years ago
Hmm, I think it's gotta be C. If the MTU 9K isn't configured on the ToR switch, that would definitely cause issues with the vSAN network performance.
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Shawnda
2 years ago
C) MTU 9K is not configured on the ToR switch.
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Luisa
2 years ago
B) MTU 9K is not configured on the hosts VMnic ports.
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Chauncey
2 years ago
D) MTU 9K is not configured on the vDS switch.
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Yasuko
2 years ago
A) MTU 9K is not configured on the hosts vSAN vMKernel ports.
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Reena
2 years ago
C) MTU 9K is not configured on the ToR switch.
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Salina
2 years ago
B) MTU 9K is not configured on the hosts VMnic ports.
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Kirk
2 years ago
A) MTU 9K is not configured on the hosts vSAN vMKernel ports.
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Virgina
2 years ago
But what about option C? Could it be the ToR switch causing the problem?
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Alona
2 years ago
I agree with Jackie, MTU 9K not configured on the hosts vSAN vMKernel ports could be the issue.
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Jackie
2 years ago
I think the cause could be option A.
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