Cisco Enterprise Network Core Technologies (ENCOR) 2025 – 400 Free Practice Questions to Pass the Exam

The role of the EIGRP Query packet is to request routing information from neighbors. When a router experiences a change in the topology, such as a network failure or a new route being added, it may need to gather routing information from its EIGRP neighbors to recalculate the best paths. The Query packet is sent by one router to solicit the appropriate routing data from adjacent routers, enabling it to update its own routing table based on the latest information.

This mechanism is crucial within EIGRP’s operation to ensure that all routers maintain accurate and up-to-date routing information. The responder routers then reply with either a Route Reply or other relevant packets, which include the requested information to help the querying router make informed decisions about routing.

The other options do not accurately describe the function of the Query packet. For example, while sending greetings between routers is essential for the initial discovery of neighbors and maintaining adjacency, this is managed by Hello packets in EIGRP. Updates to routing tables are generally handled through Route Update packets or Route Reply packets rather than the Query packet. Establishing new connections pertains more to initial adjacency formation rather than the querying process for routing information.