Cisco Certified Network Associate (CCNA) Practice Exam

What does the letter Q represent in the output of #show eigrp neighbors?

1. The number of queued packets waiting to be sent

2. The quality of the link to the neighbor

3. The queued routes in the routing table

4. The quick connectivity status of the neighbor

The correct answer is: The number of queued packets waiting to be sent

In the context of the command `show eigrp neighbors`, the letter Q represents the number of queued packets waiting to be sent to a neighbor. This is relevant in the operation of the EIGRP protocol, which manages how routes are disseminated across the network. When packets are queued, it typically indicates that there are conditions affecting the immediate transmission of these packets, possibly due to network congestion or other factors impacting the neighbor adjacency. Understanding the queue count can help network engineers diagnose potential performance issues or bottlenecks in routing updates and data flow within an EIGRP-enabled network. Correctly interpreting this value is critical in maintaining network efficiency and ensuring timely updates among routers participating in EIGRP. This aspect of EIGRP behavior is essential for maintaining optimal routes and network stability.