Disk Operating System (DOS) Question:
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Which command is used to open the directory?

a. Open
b. Chdir
c. Move
d. All of above

b. Chdir

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Essential files of MS DOS are: a. Command.com b. Io.sys c. Msdos.sys d. All of above	What is the function of folder? a. Save files b. Delete files c. Move files d. All of the above