Disc Operating System (DOS)
Suppose you had an incurable computer virus and decided to wipe out all the data and partitions on your hard drive and reformat. What is the order in which you must delete the partitions?

Logical, Extended, Primary
None of these
Extended, Logical, Primary
Logical, Primary, Extended
Primary, Extended, Logical

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

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