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Disc Operating System (DOS)

Disc Operating System (DOS)
DOS uses letters of the alphabet to designate disk drives. How many disk drives can DOS address (recognize)?

16
26
4
1

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Disc Operating System (DOS)
In MS-DOS you can use small or capital letter of combination of both to enter a command but internally MS-DOS work with.

Small letter
Both a and b
Capital letter
None of above

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Disc Operating System (DOS)
What is a TSR?

token steady route
token set ready
terminate and stay resident program
take status request
test status request

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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?

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

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Disc Operating System (DOS)
Internal command in Dos are

Cls, rd label
Time, type, dir
Del, disk copy, label
Dir, ren, sys

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Disc Operating System (DOS)
RESTORE command is used to

Restore files from disks made using the BACKUP command
Restore files which are deleted recently
Restore files which are deleted
Restore files from recycle bin

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