Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 341

How can shared services in an MPLS Layer 3 VPN provide Internet access to the Customers of a central service provider?

Answer options

• A. Static routes on CE routers allow route leakage from a PE global routing table.
• B. The CE router can establish a BGP peering to a PE router and use the PE device to reach the Internet.
• C. The customer VRF uses route targets to import and export routes to and from a shared services VRF.
• D. Route distinguishers are used to identify the routes that CEs can use to reach the Internet.

Correct answer: C

Explanation

The correct answer is C because the customer VRF uses route targets to manage the flow of routes between itself and the shared services VRF, enabling Internet access. Option A is incorrect as static routes do not facilitate the necessary route sharing. Option B is not the best choice because while BGP peering is useful, it does not specifically describe the role of shared services. Option D is also incorrect since route distinguishers are primarily for route identification rather than direct Internet access.