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  1. What is MS-DOS?
    1. Multipurpose System Digital Offline Sign
    2. Microsoft Disk Operating System
    3. Multi-System Disk Operating System
    4. Microchip Sign Digital System
Correct Option: B

MS-DOS stands for Microsoft Disk Operating System. It is a discontinued operating system for x86based personal computers mostly developed by Microsoft. It was the main operating system for IBM PC compatible personal computers during the 1980s and 1990s.



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