VMware Exam 5V0-21.21 Topic 4 Question 75 Discussion

Actual exam question for VMware's 5V0-21.21 exam

Question #: 75
Topic #: 4

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?

AMTU 9K is not configured on the hosts vSAN vMKernel ports.

BMTU 9K is not configured on the hosts VMnic ports.

CMTU 9K is not configured on the ToR switch.

DMTU 9K is not configured on the vDS switch.

Show Suggested Answer

Suggested Answer: C

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

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

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Heike

2 months 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 months 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 months 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 months 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

15 days ago

C) MTU 9K is not configured on the ToR switch.

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Sylvie

16 days ago

B) MTU 9K is not configured on the hosts VMnic ports.

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Youlanda

1 months ago

A) MTU 9K is not configured on the hosts vSAN vMKernel ports.

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Jackie

2 months 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 months 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

26 days ago

C) MTU 9K is not configured on the ToR switch.

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Luisa

30 days ago

B) MTU 9K is not configured on the hosts VMnic ports.

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Chauncey

1 months ago

D) MTU 9K is not configured on the vDS switch.

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Yasuko

1 months ago

A) MTU 9K is not configured on the hosts vSAN vMKernel ports.

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Reena

1 months ago

C) MTU 9K is not configured on the ToR switch.

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Salina

1 months ago

B) MTU 9K is not configured on the hosts VMnic ports.

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Kirk

2 months ago

A) MTU 9K is not configured on the hosts vSAN vMKernel ports.

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Virgina

2 months ago

But what about option C? Could it be the ToR switch causing the problem?

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Alona

3 months ago

I agree with Jackie, MTU 9K not configured on the hosts vSAN vMKernel ports could be the issue.

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Jackie

3 months ago

I think the cause could be option A.

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