You are troubleshooting the connectivity of a Windows desktop. You go into command-line and you want to pull up the TCP/IP protocol information for the device. What command would get you the information?
The ipconfig command within the command-line interface will show all current TCP/IP configuration information for the device it is ran on. Microsoft Windows is one of the operating systems that support that command.
Wikipedia
ipconfig (standing for "Internet Protocol configuration") is a console application program of some computer operating systems that displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings.