Which command is used to view the routing table in Cisco IOS?

The command to view the routing table in Cisco IOS is "show ip route." This command provides a clear snapshot of the active routing table, detailing all routes known to the router, including destination networks, next-hop addresses, and the administrative distance associated with those routes.

Using "show ip route" allows network administrators to troubleshoot and monitor the routing paths effectively. It can display various types of routing information, including static routes, dynamic routes learned through routing protocols, and directly connected networks. This insight is crucial for making informed decisions regarding routing configurations and identifying potential connectivity issues.

The other commands listed do not serve the purpose of viewing the routing table. For instance, "show ip config" is not a valid command in Cisco IOS, while "show running-config" displays the current configuration of the router, including interface settings and routing configuration but does not specifically isolate the routing table. Lastly, "display routing-table" is not a command used in Cisco IOS; it may be relevant in other vendor-specific operating systems, such as Huawei’s network equipment. Therefore, "show ip route" stands out as the correct and relevant command for this task.