Which statement is true regarding OSPF routers?

The statement regarding OSPF (Open Shortest Path First) routers that is true is that they utilize a link-state database for routing decisions. OSPF is a link-state routing protocol, which means that each router maintains a complete view of the network topology in the form of a link-state database. This database is built from the information collected from OSPF Link-State Advertisements (LSAs) sent by other OSPF routers.

Each OSPF router shares its link-state information with its neighbors, allowing all routers in the same OSPF area to have a consistent view of the network. This is critical for OSPF's operation, as it enables routers to independently calculate the best path to reach each destination using the Shortest Path First (SPF) algorithm, also known as Dijkstra's algorithm. The link-state database reflects the links between routers and their states, which is essential for determining the most efficient routing paths.

Other statements do not accurately describe OSPF functionality. OSPF does not only send updates when a topology change occurs; while these updates are sent during changes, OSPF also periodically sends hello packets to maintain neighbor relationships. It's also not true that all OSPF routers must reside in the