Which term refers to the BGP topology database?

• A. BGP topology database
• B. BGP routing table
• C. BGP forward map
• D. BGP adjacency list

Answer: (A)

The main idea is that BGP organizes information into different data structures for different purposes. The topology database is the internal store that captures the learned BGP graph of how ASes connect, based on AS_PATH information in updates. It represents the network’s topology and relationships, not the actual paths being used to reach specific prefixes. That’s a separate role from the BGP routing table, which holds the best routes to destinations, including their next-hops. It’s also not the per-neighbor data structure that tracks which neighbors are connected (the adjacency list). So the term that refers to this topology-specific store is simply the BGP topology database. The routing table is about actual route entries, the adjacency list is about neighbor connections, and there isn’t a standard concept called a “forward map” in this context.