VCP-DCV Distributed Port Group Practice Question
An administrator is configuring a distributed switch for a cluster of ESXi hosts. The requirements are: VLAN 100 for production, VLAN 200 for management, and a separate VLAN 300 for vMotion. The management network should be isolated from production traffic. What is the best practice for configuring these networks on the distributed switch?
⚠ Common exam trap
A common trap is assuming that management and vMotion can share a VLAN or that VLAN trunking simplifies configuration. In reality, each VMkernel service type should have its own VLAN and port group for isolation and performance.
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
✓
Create three separate distributed port groups, each with the appropriate VLAN ID, and assign each VM kernel adapter or VM to the correct port group.
Best practice for segmenting different traffic types (production, management, vMotion) on a distributed switch is to create separate distributed port groups, each assigned a unique VLAN ID. This isolates traffic at Layer 2, enhances security, and prevents interference. VMkernel adapters for management and vMotion, as well as VMs for production, are then attached to their respective port groups. Option B is incorrect because VLAN tagging on VMs is not suitable for VMkernel adapters, which require dedicated port groups. Option C is incorrect because using standard switches defeats the purpose of a distributed switch and adds management complexity. Option D is incorrect because VLAN trunk (4095) is used for guest-level tagging, not for isolating kernel traffic. Option E is incorrect because management and vMotion should be on separate VLANs to avoid resource contention and security risks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create three separate distributed port groups, each with the appropriate VLAN ID, and assign each VM kernel adapter or VM to the correct port group.
Why this is correct
Correct: Separate port groups with specific VLAN IDs for each traffic type (VLAN 100 production, VLAN 200 management, VLAN 300 vMotion) isolate traffic and follow best practices.
- ✗
Create one distributed port group with VLAN 100, and use VLAN tagging on the VMs for management and vMotion.
Why it's wrong here
Incorrect: VLAN tagging on VMs is used for guest OS-level tagging, not for VMkernel adapters. Management and vMotion kernel adapters require dedicated port groups.
- ✗
Use standard switches for management and vMotion to avoid complexity.
Why it's wrong here
Incorrect: Using standard switches instead of the distributed switch adds complexity and defeats the benefits of centralized management and consistent configuration.
- ✗
Create one distributed port group with VLAN trunk (4095) and use port-based VLAN filtering on the VMs.
Why it's wrong here
Incorrect: VLAN trunk (4095) passes all VLANs to the guest, but VMkernel adapters should not rely on guest-level tagging; they need explicit VLAN assignment.
- ✗
Create two port groups: one for production (VLAN 100) and one for management+vMotion (VLAN 200) because vMotion can share VLAN with management.
Why it's wrong here
Incorrect: Management and vMotion should be on separate VLANs to avoid resource contention and security risks; sharing a VLAN is not a recommended best practice.
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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.