VCP-VVF Troubleshoot And Optimize Practice Question
A newly deployed virtual machine is unable to communicate with other VMs on the same vSphere Distributed Switch (vDS), although it shares the same port group. What is the most common misconfiguration to check on the vDS port group settings?
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
✓
Verify the VLAN ID configured on the distributed port group matches the physical switch trunk configuration for that network.
VLAN tagging mismatches or incorrect VLAN IDs assigned to the port group are frequent causes of isolation. Alternatively, security policies like Promiscuous Mode or MAC address changes might block traffic, but VLAN configuration is the primary layer-2 requirement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ensure that NetFlow is enabled on the distributed switch uplinks.
Why it's wrong here
NetFlow is used for traffic monitoring and analytics, not packet forwarding between VMs.
- ✓
Verify the VLAN ID configured on the distributed port group matches the physical switch trunk configuration for that network.
Why this is correct
If the VLAN ID on the port group does not match the physical switch port encapsulation, traffic will be dropped at the switch boundary.
- ✗
Confirm that Link Aggregation Control Protocol (LACP) is disabled on all host physical adapters.
Why it's wrong here
LACP is optional for uplink teaming and is not required for basic VM-to-VM communication.
- ✗
Check whether the port group is configured with static binding instead of ephemeral binding.
Why it's wrong here
Binding type determines port allocation timing, not layer-2 connectivity success between VMs on the same network.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
About these practice questions
One of 517 original VCP-VVF practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official VMware exam blueprint
This VCP-VVF 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-VVF exam.