BGP is a successor to an earlier protocol called EGP.

• A. Not applicable
• B. Not sure
• C. False
• D. True

Answer: (D)

BGP is the successor to EGP because of how routing between autonomous systems evolved. EGP was an early exterior gateway protocol used to exchange reachability information between networks, but it lacked the features needed for a growing Internet—things like scalable CIDR support, robust policy-based routing, and richer path information. BGP was designed to address these gaps, introducing capabilities such as AS PATH, route attributes, and classless routing (CIDR), which made inter-domain routing scalable and controllable. That evolutionary step is why BGP is considered the successor. So the statement is true. The other options don’t fit because the historical relationship is established: BGP did replace EGP, not something uncertain or false.