Cisco Certified Network Associate (CCNA) Practice Exam

What command is utilized for a quick display of IP routing information?

1. show ip route

2. show ip interface brief

3. show protocols

4. show ip protocols

The correct answer is: show ip route

The command that is utilized for a quick display of IP routing information is "show ip route." This command is essential for network professionals as it provides a detailed view of the router's routing table. The routing table contains important information such as the network destinations, the associated subnet masks, the next-hop addresses, and the administrative distances and metrics that determine the best route to reach each destination. When executed, this command allows network administrators to quickly assess routing information, identify active routes, and troubleshoot potential routing issues. The output of this command indicates how the router will direct packets based on the available routes, which is crucial for network efficiency and reliability. Other options, while useful for different purposes, do not provide a direct display of IP routing information. For example, the command that shows interfaces and their status would indicate basic connectivity but lacks routing specifics. Commands that pertain to protocols or IP protocols may offer insights into configuration details but do not focus specifically on the routing table itself. Therefore, "show ip route" stands out as the singular command dedicated explicitly to IP routing information.