Cisco Certified Network Associate (CCNA) Practice Exam

Which command displays the CPU utilization on a Cisco router?

1. #show memory

2. #show process

3. #show ip route

4. #show interfaces

The correct answer is: #show process

The command that displays CPU utilization on a Cisco router is "show process." This command provides a detailed overview of the processes currently running on the router, along with various statistics, including CPU usage. Specifically, it shows how much CPU time each process is consuming, which is essential for diagnosing performance issues or understanding the load on the router's CPU. The other commands serve different purposes: - The "show memory" command presents information about the memory usage within the router, detailing how much memory is allocated and what is available. While this is important for overall performance, it does not provide CPU utilization statistics. - The "show ip route" command displays the router's routing table, which provides information on the paths available for data to travel across the network but does not relate to the CPU usage. - The "show interfaces" command provides details about the operational status of the router's interfaces, including metrics like bandwidth usage, errors, and operational state. It focuses on interface performance rather than the CPU. Understanding CPU utilization is crucial for network professionals to ensure efficient router performance and troubleshoot any potential bottlenecks or issues affecting the network.