100-150 Question 243
Single answerYou are troubleshooting a network issue on a Cisco switch where several devices are unable to communicate. To check the current status of the interfaces and identify any errors, which command should you run?
- A
show ip interface brief
- B
show running-config
- C
show version
- D
show vlan brief
Show answer and explanation
Correct answer: A
Explanation
To troubleshoot interface-related issues, you need a command that shows the operational state of interfaces and their IP configurations. The 'show ip interface brief' command is specifically designed to provide this information in a concise format, making it the best choice for this scenario.
- A. Correct.
The 'show ip interface brief' command provides a quick summary of all interfaces on the device, including their IP addresses, operational status, and line protocol status. This is useful for identifying interface issues and is the correct command for this scenario.
- B. Incorrect.
The 'show running-config' command displays the current configuration of the device, but it does not provide real-time status or error information for interfaces.
- C. Incorrect.
The 'show version' command provides details about the device's IOS version, uptime, and hardware specifications, but it is not relevant for troubleshooting interface issues.
- D. Incorrect.
The 'show vlan brief' command displays VLAN configurations on the device, which is useful for VLAN-related troubleshooting but does not provide interface status information.