Final answer:
A command-line interface (CLI) is a user interface that requires the user to communicate with the computer via typed commands.
Step-by-step explanation:
The user interface that requires the user to communicate instructions to the computer via typed commands is called a command-line interface (CLI). In a CLI, the user interacts with the computer by entering text-based commands into a command prompt or terminal. The computer then executes these commands and provides the user with the requested outcome or information.