CCNA: Cisco Certified Network Associate — Question 334

Which two statements about exterior routing protocols are true? (Choose two.)

Answer options

• A. They determine the optimal within an autonomous system.
• B. They determine the optimal path between autonomous systems.
• C. BGP is the current standard exterior routing protocol.
• D. Most modern networking supports both EGP and BGP for external routing.
• E. Most modern network routers support both EGP and EIGRP for external routing.

Correct answer: B, C

Explanation

The correct answers are B and C because exterior routing protocols like BGP are specifically designed to determine the optimal paths between different autonomous systems, and BGP is indeed the standard protocol used for this purpose. Option A is incorrect as it pertains to interior routing protocols, while options D and E incorrectly state that EGP is commonly supported alongside EIGRP, which is not true for external routing.