What occurs during the OSPF adjacency formation process?

During the OSPF adjacency formation process, OSPF routers exchange Hello packets to maintain neighbor relationships. This procedure is essential for establishing and maintaining a link-state database, which is pivotal for the functionality of the OSPF routing protocol.

The exchange of Hello packets serves multiple purposes. Primarily, it helps routers identify and authenticate each other, allowing them to confirm their ability to communicate. Each router sends Hello packets at regular intervals to check for responsive neighbors, thus ensuring that all routers involved in the OSPF area are aware of one another. This interaction enables the routers to establish adjacencies, which are necessary for sharing routing information and achieving a stable network topology.

The other choices do not accurately reflect the process. Specifically, routers do not select paths during the adjacency formation; that process occurs later when they start sharing routing information. Static routes are unrelated to OSPF's dynamic operations, and OSPF does not send updates to all devices simultaneously, as it utilizes a more efficient method of incremental updates when changes occur in the topology.