350-601 Network Practice Question
Which VXLAN component is responsible for encapsulating and decapsulating Ethernet frames into UDP packets for transport over the IP network?
⚠ Common exam trap
Cisco often tests the distinction between the VTEP (the endpoint that performs encapsulation) and the VXLAN Tunnel (the logical path), causing candidates to mistakenly select 'VXLAN Tunnel' because they associate tunnels with 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 VXLAN Tunnel Endpoint (VTEP) is the component responsible for performing encapsulation and decapsulation of Ethernet frames into UDP packets for transport over the IP network. It sits at the edge of the VXLAN overlay and maps tenant traffic to VXLAN segments by adding a VXLAN header (including the VNI) and an outer UDP/IP header. This process allows Layer 2 frames to traverse a Layer 3 underlay network.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
VTEP
Why this is correct
VTEP is the tunnel endpoint that does encapsulation.
- ✗
VXLAN Gateway
Why it's wrong here
Gateway is for bridging VXLAN to VLAN, not basic encapsulation.
- ✗
VXLAN Tunnel
Why it's wrong here
Tunnel is the logical path, not the endpoint.
- ✗
VNI
Why it's wrong here
VNI is the network identifier, not an endpoint.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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