Disc Operating System (DOS)
Which command will be used to display a column file compression ratio for each file of Double spaced disk?

DIR /C (/C switch introduced in DOS version 6.00)
DIR/S
DIR/W
DIR/B

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

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