What does the show running-config command reveal about a router or switch?

What does the show running-config command reveal about a router or switch?

• A. Only the currently active interfaces.
• B. The configuration of all interfaces and protocols.
• C. Only the static routes configured.
• D. Current connection states and error logs.

Answer: (B)

The command "show running-config" is used on Cisco routers and switches to display the current configuration that is actively being used by the device. This includes comprehensive information about all interfaces, routing protocols, access lists, and other configurations set on the device. By using this command, network administrators can quickly get a complete picture of how the device is configured at that moment. This allows them to verify interface settings, check the status of routing protocols in use, and review security configurations, among other key details necessary for network management and troubleshooting. In contrast, the other options are limited in scope. They do not reflect the full breadth of what the running configuration encompasses. For instance, the current configuration includes not just active interfaces but also those that may be configured but not currently in use. Additionally, it provides much more than just static routes or connection states and error logs; it encompasses all aspects of the device's operational settings.

The command "show running-config" is used on Cisco routers and switches to display the current configuration that is actively being used by the device. This includes comprehensive information about all interfaces, routing protocols, access lists, and other configurations set on the device.

By using this command, network administrators can quickly get a complete picture of how the device is configured at that moment. This allows them to verify interface settings, check the status of routing protocols in use, and review security configurations, among other key details necessary for network management and troubleshooting.

In contrast, the other options are limited in scope. They do not reflect the full breadth of what the running configuration encompasses. For instance, the current configuration includes not just active interfaces but also those that may be configured but not currently in use. Additionally, it provides much more than just static routes or connection states and error logs; it encompasses all aspects of the device's operational settings.