ICND2: Interconnecting Cisco Networking Devices Part 2 (legacy) — Question 34

Which protocol can be used between administrative domains?

Answer options

• A. IS-IS
• B. EIGRP
• C. BGP
• D. OSPF C

Correct answer:

Explanation

BGP (Border Gateway Protocol) is the correct answer as it is specifically designed for routing between multiple autonomous systems, making it ideal for administrative domain interactions. IS-IS, EIGRP, and OSPF are primarily used within single autonomous systems and do not support inter-domain routing effectively.