A technician is working on a Layer 2 switch and notices that a %CDP-4-DUPLEX_MISMATCH message keeps appearing for port G0/5. What command should the technician issue on the switch to start the troubleshooting process?

Issuing the command to display the interface details for port G0/5 is essential for troubleshooting the %CDP-4-DUPLEX_MISMATCH message. This message indicates that there is a duplex mismatch between the switch port and the connected device, which can lead to performance issues on the network.

When the technician runs the command to show the interface information, it provides critical details such as the current configuration of the interface, the negotiation status for duplex settings, and statistics related to errors and traffic. This information will help the technician determine if the duplex setting is set to auto, full-duplex, or half-duplex and ascertain whether a configuration mismatch exists with the connected device.

By understanding the configuration and operational state of the interface, the technician can make informed decisions on how to resolve the duplex mismatch issue, whether it involves adjusting settings on the switch or the connected device to ensure both are operating in accordance with similar duplex standards.