Which command would provide the internal IP address for a Windows instance?

To retrieve the internal IP address of a Windows instance, the appropriate command is "ipconfig". This command is specifically designed for Windows operating systems and provides a wealth of information regarding network configuration, including details about the network interfaces, default gateways, and DNS servers. Running ipconfig in the Command Prompt will display the internal IP addresses assigned to the machine, allowing users or administrators to identify the network settings easily.

The other commands would not yield the correct results for a Windows environment. For example, "ifconfig" is primarily a command used in Unix-like operating systems such as Linux and macOS to configure and manage network interfaces. "get-ip" and "show ip" do not correspond to standard commands in Windows for retrieving network configuration details, contributing further to the specificity of "ipconfig" as the correct choice.