A technician is trying to request a new IP address to a customer's computer through the command prompt. Which of the following commands should the technician use?

ipconfig /flushdns clears the local DNS resolver cache, which has no effect on the IP address assignment.

The ipconfig /renew command broadcasts a DHCP Discover or DHCP Request message to the DHCP server, causing it to issue a new IP address lease to the client. This is the correct command when a technician needs to assign a fresh IP address to a computer without manually configuring one. It works on adapters that are configured to obtain an IP automatically.

ipconfig /all displays detailed network configuration information including MAC addresses and DNS servers but does not request a new IP address.

ipconfig /release relinquishes the current DHCP-assigned IP address lease, leaving the adapter without an IP - it does not obtain a new one.