Which command is used to check the configuration of a switch?

The command "show run" is utilized to display the running configuration of a switch. This running configuration includes all the current settings and configurations that are active and applied to the switch. It provides detailed information about various aspects of the switch’s configuration, such as interface settings, VLAN configurations, and protocols that are being used.

The "show run" command is fundamental in network management because it allows administrators to quickly assess the current operational state of the device, troubleshoot issues, and verify that configurations are applied as intended. When a switch is operating, the running configuration reflects all modifications and settings since the last reload of the device, making it critical for real-time analysis.

Other command choices do not reflect standard syntax or functionality within Cisco IOS. "show config" and "config show" do not exist as valid commands in Cisco documentation, and "view settings" is not a recognized command either. Instead, network engineers rely on "show run" for comprehensive insights into the live configurations of a switch.