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VMware 2V0-51.23 Exam - Topic 1 Question 3 Discussion

An end-user is experiencing a black screen when connecting to their virtual desktop. After a few seconds, the connection closes. Which could be the cause of the issue? (Choose three.)
A) There is a vRAM shortage on the Horizon virtual machine. and C) The incorrect video driver version is installed on the Horizon virtual machine. and E) There is an incorrect firewall configuration.
B) The Client machine video memory is too high.
D) The Horizon Virtual Machine video memory is too high.

VMware 2V0-51.23 Exam - Topic 1 Question 3 Discussion

Actual exam question for VMware's 2V0-51.23 exam
Question #: 3
Topic #: 1
[All 2V0-51.23 Questions]

An end-user is experiencing a black screen when connecting to their virtual desktop. After a few seconds, the connection closes. Which could be the cause of the issue? (Choose three.)

Show Suggested Answer Hide Answer
Suggested Answer: A, C, E

A black screen when connecting to a Horizon virtual desktop can be caused by various reasons, such as network issues, hardware issues, Horizon tunnel issues, or underlying guest operating system issues. Based on the options given, the following could be the cause of the issue:

A vRAM shortage on the Horizon virtual machine. This can affect the display performance and cause a black screen or a disconnect.To resolve this issue, you should configure the pool to provide enough video memory for the resolutions you plan to present to the clients1.

The incorrect video driver version installed on the Horizon virtual machine. This can cause compatibility issues and prevent the display protocol from working properly.To resolve this issue, you should verify that the View desktop is using the correct video driver and that it is compatible with the VMware Tools and Horizon Agent versions installed23.

An incorrect firewall configuration. This can block or misroute the display protocol traffic and cause a connection failure.To resolve this issue, you should verify that the required ports are open between the client, UAG/Security server/Connection server, and VDI machine4.

The other options are not likely to cause a black screen when connecting to a Horizon virtual desktop:

The client machine video memory is too high. This should not affect the display protocol performance or cause a black screen. The client machine video memory is only used to render the display on the local device, not on the remote desktop.

The Horizon virtual machine video memory is too high. This should not cause a black screen or a disconnect either. The Horizon virtual machine video memory is used to allocate resources for the display protocol on the server side, not on the client side.


Dual monitors configured using PCoIP does not span both the monitors for VMware View and Connecting to a VDI desktop with PCoIP displays a black screen and disconnects after 10 seconds

Error attaching to SVGADevTap, error 4000: EscapeFailed reported by PCoIP server

Interoperability Matrices

Configuring PCoIP Secure Gateway in VMware View

[Network Ports in VMware Horizon]

by Sheron at Feb 12, 2024, 12:46 AM

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Shenika
10 months ago
Yeah, I agree with the driver version being a likely culprit.
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Vicki
10 months ago
High video memory? Really? That seems odd.
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Victor
10 months ago
No way, it’s probably a firewall config problem.
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Milly
11 months ago
I think it might be the video driver version.
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Alyce
11 months ago
A vRAM shortage could definitely cause that issue.
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Dante
11 months ago
I’m uncertain about the client machine's video memory being too high. I thought that would only affect performance, not the connection itself.
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Simona
11 months ago
I feel like firewall configurations can sometimes cause connection issues, but I can't recall if it would lead to a black screen specifically.
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Shenika
11 months ago
I think the video driver version could definitely be a factor. We practiced a similar question about driver compatibility last week.
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Izetta
11 months ago
I remember something about vRAM shortages causing issues, but I'm not sure if it's the main reason for a black screen.
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Staci
12 months ago
I'm a little confused by this question. There are a lot of potential causes listed, and I'm not sure which ones are the most relevant. I'll need to re-read the question and options a few times to make sure I understand what they're looking for.
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Ira
12 months ago
Okay, I've got this. The video memory on either the client or the virtual machine is probably too high, causing the black screen and connection issues. And an incorrect video driver version on the VM could also be the problem. I'll make sure to select those three options.
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Francoise
12 months ago
Hmm, I'm a bit unsure about this one. There are a few different options here, and I'm not totally sure which ones are the most likely culprits. I'll need to think through the virtual desktop setup and potential points of failure carefully.
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Dorthy
12 months ago
This seems like a pretty straightforward question. I'll focus on the key details - the black screen, the connection closing after a few seconds, and the virtual desktop environment. I think the most likely causes are related to the video configuration, either on the client or the virtual machine side.
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Diego
12 months ago
This seems like a tricky one, but I think I've got a good strategy. I'll focus on the video-related issues first, since that seems to be the core of the problem. The vRAM shortage, incorrect video driver, and high video memory on either the client or VM are the most likely culprits, so I'll select those.
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Alesia
12 months ago
This looks like a pretty straightforward MPLS VPN question. I think I can handle this one.
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Alexia
12 months ago
Hmm, I'm a little unsure about this one. I'll need to review my notes on the Appointed Actuary's role and responsibilities to make sure I understand the nuances here.
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Lenita
12 months ago
Hmm, I'm a bit confused. If the Order Letter process is a sub-process, does that mean it's not counted separately? And how do we know the number of instances for each process? I'll need to re-read the question carefully to make sure I understand it fully.
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Maxima
12 months ago
Hmm, I'm a bit unsure about this one. I know antennas have side lobes, but I'm not sure if the radiated power is "basically distributed" to them. Let me think this through carefully.
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Mariann
2 years ago
I believe the problem is with the incorrect firewall configuration.
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Keena
2 years ago
I agree with Merilyn, but it could also be due to incorrect video driver version installed on the Horizon virtual machine.
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Merilyn
2 years ago
I think the issue might be because of vRAM shortage on the Horizon virtual machine.
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Quinn
2 years ago
That's a good point, Aretha. Firewall settings could definitely impact the connection.
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Aretha
2 years ago
I believe the incorrect firewall configuration might also be a possible cause.
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Raymon
2 years ago
Yes, that's a good point. The video driver version is crucial for display.
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Sabra
2 years ago
I also think the incorrect video driver version could be causing the problem.
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Quinn
2 years ago
I agree with Raymon, that could definitely be a reason for the black screen.
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Raymon
2 years ago
I think the vRAM shortage on the Horizon virtual machine could be causing the issue.
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