Which OSPF table is the same on all converged routers within an OSPF area?

The link-state database (LSDB) contains the complete information about the topology of the network as seen by each OSPF router within an area. When OSPF routers exchange link-state advertisements (LSAs) during the process of establishing connectivity and maintaining routes, they all build their LSDBs based on the same set of LSAs. This results in each router within the same OSPF area having an identical view of the network topology.

Maintaining a consistent LSDB is crucial for OSPF to function correctly since all routers will calculate their own routing tables using the same topology information from the LSDB. This synchronization leads to a stable and loop-free routing environment within the OSPF area.

Other choices do not provide the same level of consistency across routers. The routing table varies based on individual router configurations and paths learned from the routing decisions made after processing the LSDB. The topology table is not a standard term used in OSPF; instead, OSPF utilizes the LSDB and the routing table. The neighbor table, which lists neighboring routers, can differ between routers due to their individual adjacency relationships. Therefore, the link-state database is the only component that is uniform across all routers within an OSPF area.