Disc Operating System (DOS)
Which command should be used to display all files within the specified subordinate directory of the subdirectory?

Dir / ch
Dir \ pathname
Dir \ pathname\pathname
Dir \pathname\filename

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

External commands reside in RAM until called
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

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