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Disc Operating System (DOS)

Disc Operating System (DOS)
While working with MS-DOS which key is used to get the p[revious command used:

F5
F3
F1
F4

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Disc Operating System (DOS)
While working with MS-DOS which command is used to copy all files with extension .txt into one file named all.txt?

Copy *.txt a:
Copy a: *.txt
Copy *.txt c:
Copy *.txt all.txt

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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)
Which command displays only file and directory names without size, date and time information?

Dir /b
None of the listed here
Dir /s
Dir/w

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Disc Operating System (DOS)
The maximum length in DOS commands is

127 chars
80 chars
100 chars
8 chars

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Disc Operating System (DOS)
What DOS program can you run to see which serial ports are detected?

command.com
serial.chk
SDET
MSD

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MORE MCQ ON Disc Operating System (DOS)

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