What is a common troubleshooting step to verify DHCP configuration issues on a workstation?

Using the command "ipconfig /all" is a practical troubleshooting step to verify DHCP configuration issues on a workstation because it provides comprehensive details about the network configuration of the device. This command reveals the current IP address, subnet mask, default gateway, DNS servers, and DHCP server information.

By looking at the output, a user can confirm whether the workstation is successfully receiving an IP address from the DHCP server, the lease time, and whether it has the correct default gateway and DNS settings. This information can help identify if the issue lies with the DHCP configuration on the server side or if there's a problem with the workstation's network connection.

In contrast, other options do not serve as effective verification methods. Restarting the network cable does not address DHCP configurations directly, changing the IP address manually bypasses the DHCP process, which could lead to further issues, and deleting DHCP reservations could cause more confusion if not managed properly, especially if static IP assignments are involved.