Alcatel-Lucent NRS II – Wide Area Network Services — Question 7

Which of the following are functions of the MPLS control plane in a router? (Choose two)

Answer options

• A. Label allocation and management.
• B. Label swapping.
• C. Pushing a label on an unlabeled packet.
• D. Label signaling.
• E. Routing lookups.

Correct answer: A, D

Explanation

The MPLS control plane is responsible for label allocation and management (A) and label signaling (D), which are essential for establishing label-switched paths. Label swapping (B) and pushing a label on an unlabeled packet (C) are functions of the data plane, while routing lookups (E) are part of traditional IP routing rather than MPLS control plane functions.