Nokia Certified Network Associate – IP/MPLS Services — Question 19

Which of the following statements about VXLAN encapsulation is TRUE?

Answer options

• A. It uses an MPLS label to identify the transport tunnel and a VXLAN Network ID (VNI) to identify the service tunnel.
• B. It uses a VXLAN Network ID (VNI) to identify the transport tunnel and an MPLS label to identify the service tunnel.
• C. It uses an additional IP header to identify the transport tunnel and a VXLAN Network ID (VNI) to identify the service tunnel.
• D. It uses VXLAN Network ID (VNI) to identify the transport tunnel and an additional IP header to identify the service tunnel.

Correct answer: D

Explanation

The correct answer is D, as VXLAN encapsulation uses the VXLAN Network ID (VNI) to identify the transport tunnel and adds an additional IP header for the service tunnel. Options A and B incorrectly swap the roles of the VNI and MPLS label, which are not part of VXLAN encapsulation. Option C also misidentifies the roles of the VNI and the additional IP header.