Disc Operating System (DOS)
Disk copy command in DOS is used to

Copy contents of one floppy disk to another
All of the listed here
Copy a file
Copy contents of CD-ROM to another

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

External commands can only be executed from a batch file.
External commands must always be used with the /e switch
External commands are stored on disk separately from COMMAND.COM
External commands reside in RAM until called

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