MS DOS is an operating system that has a/an:

Correct option is A

Ans: (A) Command Line Interface

Explanation:
MS-DOS (Microsoft Disk Operating System) is a text-based operating system that operates using a Command Line Interface (CLI). Users interact with the system by typing commands rather than using a graphical interface.

Information Booster:

• MS-DOS was developed by Microsoft and became widely used in the 1980s and early 1990s before Windows-based GUI systems replaced it.
• It uses commands like DIR, COPY, DEL, and CD to navigate and manage files.
• Latest Versions: The last standalone version was MS-DOS 6.22 before it was integrated into Windows.

Additional Information:

• Voice Line Interface: MS-DOS does not support voice commands for interaction.
• Open Source Origin: MS-DOS is proprietary software, not open-source.
• Graphical User Interface: MS-DOS lacks a GUI and does not have a window-based interface like Windows or macOS.