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VMware Exam 2V0-51.23 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]

Contribute your Thoughts:

Quinn
10 days ago
That's a good point, Aretha. Firewall settings could definitely impact the connection.
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Aretha
12 days ago
I believe the incorrect firewall configuration might also be a possible cause.
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Raymon
15 days ago
Yes, that's a good point. The video driver version is crucial for display.
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Sabra
19 days ago
I also think the incorrect video driver version could be causing the problem.
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Quinn
26 days ago
I agree with Raymon, that could definitely be a reason for the black screen.
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Raymon
28 days ago
I think the vRAM shortage on the Horizon virtual machine could be causing the issue.
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