AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 264

What is the name of the label applied to packets to allow routers to know where to forward in an MPLS network?

Answer options

• A. BFD
• B. BGP
• C. FEC
• D. ABC

Correct answer: C

Explanation

In an MPLS network, a Forwarding Equivalence Class (FEC) represents a group of packets with similar characteristics that are forwarded over the same path with the same treatment. BFD and BGP are routing and detection protocols rather than forwarding classifications, while ABC is an invalid distractor. Therefore, FEC is the correct term for how routers determine packet forwarding groups.