Disc Operating System (DOS)
To copy the file command.com from drive c: to drive a:

None of the listed here
Copy c:\command.com a:
C:A: copy command.com
Drive c: copy drive a:\command.com

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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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