The answer is to create a VMkernel adapter on VLAN 100 and ping a gateway. This is correct because a VMkernel adapter is the dedicated interface for ESXi management and infrastructure traffic, including vMotion, storage, and fault tolerance; by assigning it a specific VLAN ID, you isolate and test Layer 2 connectivity for that broadcast domain directly. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this scenario tests your understanding of how to validate VLAN configuration at the hypervisor level, often appearing as a troubleshooting step after a health check warning. A common trap is confusing this with enabling VLAN pruning or testing via a virtual machine, but the VMkernel adapter provides the most direct verification of the VLAN path without guest OS overhead. Memory tip: think “VMkernel = VLAN tester” — if you need to ping a specific VLAN, create a kernel port on that VLAN first.
VCP-DCV Configure and Manage vSphere Networking Practice Question
This VCP-DCV practice question tests your understanding of configure and manage vsphere networking. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
~ # esxcli network vswitch dvs health list -n vds1
Uplink0: healthy
Uplink1: healthy
VLAN 100: health unknown due to missing VMkernel adapter
An administrator sees this health check output. What should be done to verify VLAN 100 connectivity?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a VMkernel adapter on VLAN 100 and ping a gateway.
Option A is correct because to test VLAN 100, a VMkernel adapter with that VLAN should be created and used to ping a gateway. Option B is for pruning, not testing. Option C would test VM traffic, but VMkernel adapter is more direct for verification. Option D is not necessary.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
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 a VMkernel adapter on VLAN 100 and ping a gateway.
Why this is correct
A VMkernel adapter provides a layer 3 test on that VLAN.
Related concept
Access ports place end devices into a single VLAN.
✗
Enable VLAN pruning on the physical switch.
Why it's wrong here
VLAN pruning is for switch efficiency, not for testing connectivity.
✗
Configure a port group for VLAN 100 and connect a VM.
Why it's wrong here
This would test VM connectivity but requires additional steps.
✗
Restart the management agents.
Why it's wrong here
Restarting agents does not test VLAN connectivity.
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
Access ports place end devices into a single VLAN.
Trunk ports carry multiple VLANs between switches.
Allowed VLAN lists decide which VLANs can cross a trunk.
Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
→Use show vlan brief to verify access VLANs.
→Use show interfaces trunk to verify trunk state and allowed VLANs.
→Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
What to study next
Got this wrong? Here's your next step.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related VCP-DCV questions on switching, trunking, and access-port configuration.
Configure and Manage vSphere Networking — This question tests Configure and Manage vSphere Networking — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: Create a VMkernel adapter on VLAN 100 and ping a gateway. — Option A is correct because to test VLAN 100, a VMkernel adapter with that VLAN should be created and used to ping a gateway. Option B is for pruning, not testing. Option C would test VM traffic, but VMkernel adapter is more direct for verification. Option D is not necessary.
What should I do if I get this VCP-DCV question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related VCP-DCV questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.