350-601 Network Practice Question
A network engineer is configuring a VPC peer-link on a Nexus switch. Which interface configuration is required for the peer-link port-channel?
⚠ Common exam trap
Cisco often tests the distinction between a VPC peer-link (which must be a Layer 2 trunk) and a VPC peer-keepalive link (which is a Layer 3 routed link), causing candidates to confuse the two and incorrectly apply 'no switchport' to the peer-link.
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
✓
switchport mode trunk
A VPC peer-link is a special port-channel that carries control traffic (e.g., Cisco Fabric Services over Ethernet) and data traffic between VPC peer switches. It must be configured as a trunk (switchport mode trunk) to allow multiple VLANs, including the VPC VLAN and the peer-keepalive link VLAN, to traverse the link. Without trunk mode, the peer-link cannot properly forward the necessary VLAN traffic for VPC operation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
switchport mode trunk
Why this is correct
Trunk mode allows multiple VLANs to traverse the peer-link.
- ✗
spanning-tree port type edge trunk
Why it's wrong here
While this enables PortFast on trunk, it is not required for peer-link functionality.
- ✗
switchport mode access
Why it's wrong here
Access mode is not suitable for a peer-link that requires multiple VLANs.
- ✗
no switchport
Why it's wrong here
This makes the interface a layer 3 port, which cannot carry VLANs.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 practice question is part of Courseiva's free Cisco 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 350-601 exam.