Computer Science - Disk Operating System (DOS)

Exercise :: Disk Operating System (DOS) - Section 1

26. 

After upgrading your computer to a new DOS version, an older application displays the error message "Incorrect DOS version". What should you do to run this application?

A. Use the DOS+ command
B. Use the SETVER command
C. Restore the old DOS version
D. Contact the application's vendor support line
E. None of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

27. 

When executed from a bootable hard drive, which command will make a formatted floppy disk bootable?

A. COPY C:\DOS\COMMAND.COM A:\
B. ATTRIB C:\*.SYS A:\
C. XCOPY C:\DOS\*.* A:\
D. SYS C: A:
E. None of the above

Answer: Option D

Explanation:

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28. 

Which of the following commands allows you to make a directory?

A. MAKE
B. DIR
C. MD
D. DD
E. None of the above

Answer: Option C

Explanation:

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29. 

While working with MS-DOS, which command is used to specify the colour display, 40 columns and color?

A. MODE COLOUR
B. MODE/C
C. MODE CO40
D. MODE CHANGE
E. None of the above

Answer: Option C

Explanation:

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30. 

Which DOS command allows you to compress existing disks and to create new compressed volumes?

A. DEFRAG
B. DBLSPACE
C. SCANDISK
D. MSAV
E. None of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.