VCP-DCV Configure and Manage vSphere Networking Practice Question
A virtual machine is configured with two vNICs connected to different standard port groups (VLAN 10 and VLAN 20). The administrator wants to use both vNICs for load balancing and failover within the VM OS. Which condition must be met on the vSwitch side?
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
✓
Configure NIC teaming within the guest operating system.
The VM OS must have NIC teaming configured to use both interfaces. The vSwitch port groups are separate, so they don't team at the virtual switch level. Option A is incorrect because teaming at vSwitch is per port group, not across port groups. Option B is incorrect because MAC address changes are not needed. Option D is incorrect because route based on IP hash is for a single port group.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable MAC address changes on both port groups.
Why it's wrong here
MAC address changes are a security policy; not required for load balancing.
- ✗
Configure teaming on the standard switch by bridging the two port groups.
Why it's wrong here
Standard switches do not bridge port groups; each port group is isolated.
- ✓
Configure NIC teaming within the guest operating system.
Why this is correct
Since the vNICs are on separate port groups, the VM OS must handle load balancing and failover via software teaming (e.g., bond).
- ✗
Set load balancing to 'Route based on IP hash' on both port groups.
Why it's wrong here
IP hash works within a single port group teaming multiple uplinks; it does not combine two separate port groups.
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 |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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