Disc Operating System (DOS)
Full form of MS-DOS is

Micro Simple Disk Operating System
Micro System Disk Operating System
Micro Sort Disk Operating System
Micro Soft Disk Operating System

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Disc Operating System (DOS)
Which of the following applies to Internal DOS commands?

Internal commands can be run whenever the DOS prompt is displayed
Internal commands are reserved for DOS-level programming
Internal commands are stored on disk separately from COMMAND.COM
Internal commands can only be executed from a batch file

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