What command would you use to check the status of all interfaces on a device?

What command would you use to check the status of all interfaces on a device?

• A. show running-config
• B. show interfaces
• C. show ip interface brief
• D. show ip status

Answer: (C)

The command "show ip interface brief" provides a concise summary of the status of all interfaces on a device, including their IP addresses and operational states. This command lists each interface, indicating if it is up or down, as well as whether it is administratively shut down, all in a brief format that is easy to read. Using this command is particularly advantageous because it gives a quick overview without overwhelming details, which helps in troubleshooting connectivity issues or understanding the overall status of the network interfaces in a timely manner. It’s valuable for network engineers to quickly assess which interfaces are operational and which ones may require attention or further investigation. In contrast, "show running-config" displays the entire configuration file of the device, which includes details far beyond just interface statuses. The "show interfaces" command would provide extensive information about each interface, including statistics and error counts, but it is more detailed than necessary for a quick status check. Lastly, "show ip status" is not a valid command and would not provide any information. Therefore, "show ip interface brief" is the most suitable choice for quickly checking the interface status.

The command "show ip interface brief" provides a concise summary of the status of all interfaces on a device, including their IP addresses and operational states. This command lists each interface, indicating if it is up or down, as well as whether it is administratively shut down, all in a brief format that is easy to read.

Using this command is particularly advantageous because it gives a quick overview without overwhelming details, which helps in troubleshooting connectivity issues or understanding the overall status of the network interfaces in a timely manner. It’s valuable for network engineers to quickly assess which interfaces are operational and which ones may require attention or further investigation.

In contrast, "show running-config" displays the entire configuration file of the device, which includes details far beyond just interface statuses. The "show interfaces" command would provide extensive information about each interface, including statistics and error counts, but it is more detailed than necessary for a quick status check. Lastly, "show ip status" is not a valid command and would not provide any information. Therefore, "show ip interface brief" is the most suitable choice for quickly checking the interface status.