Cisco Certified Network Associate (CCNA) 2026 – 400 Free Practice Questions to Pass the Exam

In Enhanced Interior Gateway Routing Protocol (EIGRP), the term "adjacency" specifically refers to the relationship established between two routers that are configured to communicate with each other. This relationship involves a series of steps where routers discover each other, establish a connection, and maintain this connection for the purpose of exchanging routing information.

For adjacency to occur, both routers must agree on configurations such as their Autonomous System (AS) number and any required network protocols. Once established, this adjacency allows routers to share their routing information, exchange updates, and ensure that they have consistent information about the network topology. This is critical for the purposes of efficient and effective routing decisions within the network.

Understanding this concept of adjacency is vital as it lays the foundation for communication and data exchange in EIGRP. The other choices, while related to networking concepts, do not capture the specific nature of the adjacency relationship that is fundamental to EIGRP operations.