VCP-DCV vSphere Architecture, Products and Solutions Practice Question
A company has a vSphere environment with multiple clusters. The network team reports that a specific VLAN used for vMotion is intermittently dropping packets. What is the impact on vMotion operations?
⚠ Common exam trap
VCP-DCV often tests the misconception that vMotion will automatically fall back to the management network or another available network, or that it will simply slow down, when in fact it fails outright if the dedicated vMotion network is unreliable.
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
✓
vMotion will fail with an error.
vMotion requires a dedicated VMkernel adapter enabled for vMotion, and it does not fall back to the management network or any other interface if that specific network is unavailable or unreliable. When the vMotion VLAN is intermittently dropping packets, the vMotion process cannot maintain the reliable TCP connection needed to transfer the VM's memory state and device state, so the operation fails with an error. vSphere does not automatically reroute vMotion traffic to another network or degrade gracefully to a slower speed; it simply aborts the migration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
vMotion will use the management network as fallback.
Why it's wrong here
vMotion requires a designated vMotion-enabled VMkernel interface; it cannot silently fail over to the management network, so dropped packets cause the migration to stall or fail rather than reroute. A management-network fallback is tempting because management traffic often shares a subnet, but vMotion's own VMkernel port is mandatory.
- ✓
vMotion will fail with an error.
Why this is correct
vMotion requires a reliable vMotion network; intermittent packet loss corrupts the migration stream, so the task aborts and returns an error rather than silently completing. The VM stays powered on at the source, but the operation itself fails.
- ✗
vMotion will work but at a reduced speed.
Why it's wrong here
vMotion migrates a live VM's memory state over TCP; packet loss triggers retransmissions and timeouts, so the migration stalls or aborts rather than completing slowly. Reduced speed is tempting because bandwidth contention does slow vMotion, but that is congestion, not intermittent packet loss, which breaks the transfer outright.
- ✗
vMotion will automatically switch to another available network.
Why it's wrong here
vMotion has no automatic failover between networks; packet loss on the vMotion VLAN causes migration stalls, retries or failures rather than seamless switching. Automatic path selection applies to multipathing within a configured network, not to substituting an entirely different VLAN.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official VMware exam blueprint
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.