350-601 Network Practice Question
In a VXLAN EVPN fabric, which component is responsible for encapsulating and decapsulating VXLAN packets?
⚠ Common exam trap
Cisco often tests the distinction between the VTEP as the functional endpoint and the NVE as the logical interface, leading candidates to mistakenly select NVE when the question asks for the component responsible for encapsulation.
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
✓
VTEP
The VTEP (VXLAN Tunnel Endpoint) is the component responsible for encapsulating Ethernet frames in VXLAN packets and decapsulating them at the destination. It performs the UDP encapsulation with a VXLAN header, using the VNI to identify the Layer 2 segment, and forwards traffic over the underlay network. In an EVPN fabric, the VTEP also participates in the control plane to learn remote MAC and IP addresses via MP-BGP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
NVE
Why it's wrong here
NVE (Network Virtualization Edge) is a logical interface but VTEP is the actual endpoint.
- ✗
VNI
Why it's wrong here
VNI is the network identifier, not the encapsulating entity.
- ✗
VXLAN gateway
Why it's wrong here
A VXLAN gateway bridges VXLAN to VLAN but is not the primary encapsulator.
- ✓
VTEP
Why this is correct
VTEP is the tunnel endpoint that handles encapsulation.
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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