What does the command "show running-config" do?

The command "show running-config" is used on Cisco devices to display the current configuration settings that are actively in use. This command provides a comprehensive view of the device's operational configuration, which allows network administrators to verify settings, troubleshoot issues, and understand how the device is configured at any given moment.

When executed, it reveals critical information such as interface configurations, routing protocols, access control lists, and various other settings that define how the device operates. This is essential for monitoring and managing network devices effectively, as it enables administrators to see exactly what configurations are in place without needing to refer to backup configurations or other static files.

The other choices do not accurately describe the function of this command. For instance, rebooting the device or clearing configuration settings fall under different commands, while checking the status of connected interfaces would typically require a different command focused specifically on interface status. This makes the understanding of the "show running-config" command vital for anyone working with Cisco networking equipment.