Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 349

How do CSC VPN services use BGP to support connectivity between customer sites?

Answer options

• A. BGP uses address families for IPv6 support in networks that use IPv4 and IPv6 between customers in different geographies
• B. BGP eliminates the need for an IGP to run within the backbone earner core and provides more efficient label distribution
• C. The BGP AS-Override feature allows the CSC network to use the same autonomous system number
• D. BGP sends labels to the CSG-PE router so that traffic can traverse the backbone carrier

Correct answer: D

Explanation

The correct answer is D because BGP is responsible for distributing labels to the CSG-PE router, which is essential for traffic routing through the backbone carrier. Options A, B, and C discuss BGP features that do not directly pertain to the specific functionality of supporting connectivity between customer sites in the context of CSC VPN services.