Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 390

A network administrator is planning a new network with a segment-routing architecture using a distributed control plane. How is routing information distributed on such a network?

Answer options

• A. Each segment is signaled by a compatible routing protocol, and each segment makes its own steering decisions based on SR policy.
• B. Each segment is signaled by MPLS, and each segment makes steering decisions based on the routing policy pushed by BGP.
• C. Each segment is signaled by an SR controller, but each segment makes its own steering decisions based on SR policy.
• D. Each segment is signaled by an SR controller that makes the steering decisions for each node.

Correct answer: D

Explanation

The correct answer is D because in a segment-routing architecture with a distributed control plane, the SR controller coordinates the steering decisions for each node, ensuring consistent and efficient routing. The other options incorrectly suggest that each segment makes independent steering decisions, which does not align with the centralized control aspect of segment routing.