Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 527

Which routing protocol is used by the PE router to advertise routes to a CE router without redistribution or static after removing the RD tag from the P router?

Answer options

• A. OSPF
• B. BGP IPv4
• C. IS-IS
• D. MP-BGP

Correct answer: B

Explanation

The correct answer is B, BGP IPv4, as it is specifically designed to handle the advertisement of routes between different autonomous systems and can operate without the need for redistribution or static routes. The other options, while valid routing protocols, do not fit the criteria specified in the question regarding the PE and CE router interaction after the RD tag removal.