CCNP Practice Question: Runs the following command on Router R1: R1# show…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Both neighbors are using MD5 authentication.

  Why it's wrong here

  The EIGRP neighbor table command output (show ip eigrp neighbors) does not include any authentication-related fields, such as the key ID or hash algorithm, because authentication is configured under the EIGRP process or interface, not displayed in the neighbor adjacency table. A stable neighbor relationship can exist with or without authentication, and this output offers no evidence to determine whether MD5 or any other authentication method is in use. Therefore, the statement about MD5 authentication is unsupported by the provided data.

• ✗

  Neighbor 192.168.1.2 has a higher metric than 10.1.1.2.

  Why it's wrong here

  The EIGRP neighbor table lists neighbor IP addresses along with hold time, uptime, SRTT, RTO, queue count, and sequence number, but it does not display metric values for routes learned from those neighbors. Metrics are stored and shown in the EIGRP topology table (show ip eigrp topology), which contains the composite metric and vector metrics for each route. Without topology table output, there is no basis to claim that 192.168.1.2 has a higher metric than 10.1.1.2.

• ✓

  Both neighbors are fully established and exchanging routing information.

  Why this is correct

  A Q Cnt (queue count) of 0 means there are no EIGRP packets queued for transmission to the neighbor, indicating that all updates, queries, and replies have been processed and acknowledged, which is characteristic of a fully established adjacency. The presence of a valid, non-zero uptime value for both neighbors confirms that they have successfully completed the initial neighbor discovery and exchange process and are actively exchanging routing information. Thus, the output directly supports the conclusion that both neighbors are fully established and exchanging EIGRP routing information.

• ✗

  Router R1 is using EIGRP named mode.

  Why it's wrong here

  The header 'EIGRP-IPv4 Neighbors for AS(100)' is the format used for classic EIGRP configuration, which is created with the 'router eigrp 100' global configuration command. In named mode (EIGRP named configuration), the output includes VRF and address-family context, such as 'EIGRP-IPv4 Neighbors for VRF(NAME)' or 'EIGRP-IPv4 Neighbors for AS(100) VRF(NAME)' when using address-family configuration. The absence of a VRF or address-family label in the header indicates the router is running classic EIGRP mode, not named mode.