Which type of UI displays text commands typed over a command line?

Which type of UI displays text commands typed over a command line?

• A. Graphical User Interface
• B. Menu-driven interface
• C. Voice user interface
• D. Command-line interface

Answer: (D)

A command-line interface is defined by displaying a text prompt where you type commands directly. This setup relies on text input and output, with each command entered on a line and then executed by the system. The description “text commands typed over a command line” matches this exactly, making it the best fit. Graphical User Interface uses windows, icons, and pointers rather than plain text commands. Menu-driven interfaces present options to choose from in menus rather than typing commands. Voice user interfaces operate through spoken input. These alternatives don’t center on typing commands on a line, so they aren’t the correct match.

A command-line interface is defined by displaying a text prompt where you type commands directly. This setup relies on text input and output, with each command entered on a line and then executed by the system. The description “text commands typed over a command line” matches this exactly, making it the best fit.

Graphical User Interface uses windows, icons, and pointers rather than plain text commands. Menu-driven interfaces present options to choose from in menus rather than typing commands. Voice user interfaces operate through spoken input. These alternatives don’t center on typing commands on a line, so they aren’t the correct match.