Alcatel-Lucent NRS II – Wide Area Network Services — Question 1

Which of the following regarding MPLS encapsulation for VPRN services is TRUE?

Answer options

• A. The customer's Layer 3 header is removed at the iLER.
• B. The customer's Layer 2 header is removed at the iLER.
• C. The customer's Layer 3 header is removed at the eLER.
• D. The customer's Layer 2 header is removed at the eLER.

Correct answer: A

Explanation

The correct answer is A because in MPLS encapsulation for VPRN services, the customer's Layer 3 header is indeed removed at the ingress Label Edge Router (iLER). Options B, C, and D are incorrect as they misstate where the headers are removed or which headers are affected.