Final answer:
A technical support representative uses the ipconfig command to access network configuration details and troubleshoot connectivity issues by viewing IP addresses, subnet masks, and DNS server information, and to renew or release IP addresses.
Step-by-step explanation:
A technical support representative would need to use the ipconfig command to troubleshoot network connectivity issues. The ipconfig command is a tool that provides detailed information about the network configuration of a Windows-operated computer. By executing this command, a technical support representative can obtain important information such as the computer's IP address, subnet mask, default gateway, and DNS server addresses. This information is vital for diagnosing issues related to the network connection, such as problems with obtaining an IP address from a DHCP server, or resolving DNS related issues. The ipconfig command can also be used to release or renew an IP address, which can often resolve connectivity problems.