VCP-DCV Configure and Manage vSphere Networking Practice Question
An administrator configures a distributed switch with a single uplink on each host and a port group with VLAN 10. After connecting a VM to the port group, the VM cannot communicate with other VMs on the same VLAN but on different hosts. What is a likely cause?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The physical switch port is set to access mode with VLAN 10.
When the physical switch port is in access mode with VLAN 10, it expects untagged frames. However, the distributed port group with VLAN 10 tags the frames with VLAN 10. This mismatch causes the physical switch to drop or mishandle the traffic, preventing the VM from communicating with other VMs on the same VLAN across hosts. Option B is incorrect because teaming is not required for basic connectivity; a single uplink suffices. Option C describes trunk mode which would actually accept tagged frames, so it would work. Option D is incorrect because the VLAN ID is configured on the port group, not on the VM's virtual adapter.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The physical switch port is set to access mode with VLAN 10.
Why this is correct
Access mode expects untagged traffic, but vSphere tags frames, causing communication failure.
- ✗
The distributed switch has no teaming configured.
Why it's wrong here
Teaming is not required for basic connectivity.
- ✗
The physical switch port connected to the uplink is set to trunk mode and is tagging the VLAN.
Why it's wrong here
Trunk mode should accept tagged frames, so this would not cause an issue.
- ✗
The VLAN ID is not set correctly on the VM's virtual network adapter.
Why it's wrong here
VLAN ID is configured on the port group, not the VM adapter.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This VCP-DCV practice question is part of Courseiva's free VMware certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the VCP-DCV exam.