VCP-DCV Configure and Manage vSphere Networking Practice Question
An ESXi host has two physical uplinks (vmnic0, vmnic1) connected to a distributed switch. The administrator wants to use LACP to aggregate these uplinks to a physical switch stack. Which prerequisite must be met for LACP to work with a distributed switch?
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 distributed switch must be configured with a LAG and the physical switch with matching LACP settings.
For LACP to work with a distributed switch, the distributed switch must be configured with a Link Aggregation Group (LAG) and the physical switch must be configured with matching LACP settings. Option A is incorrect because LACP requires a dynamic LAG on the physical switch, not static. Option B is incorrect because LACP support for distributed switches was introduced in vSphere 5.1, not 5.5. Option C is incorrect because LACP requires active/active configuration, not active/standby. Option E is not a prerequisite; LACP uses the physical MAC addresses of the uplinks.
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 must be configured with a static LAG.
Why it's wrong here
Dynamic LACP can also be used.
- ✗
The distributed switch version must be 5.5 or later.
Why it's wrong here
LACP was introduced in vSphere 5.1, but version alone doesn't guarantee prerequisites.
- ✗
The uplinks must be in an active/standby configuration.
Why it's wrong here
LACP requires active/active teaming.
- ✓
The distributed switch must be configured with a LAG and the physical switch with matching LACP settings.
Why this is correct
A LAG must be created on the DVS, and the physical switch must be configured with compatible LACP parameters.
- ✗
The LACP group must have a unique MAC address.
Why it's wrong here
LACP uses port MAC addresses, not a group MAC.
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 |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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