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Q1. Which of the following is loaded for CD-ROM support?
(A) VLM.EXE
(B) CDDEX.EXE
(C) DOSKEY.EXE
(D) MSCDEX.EXE
Answer:(D) MSCDEX.EXE
Q2. Which command of DOS is used to compare two floppy disks?
(A) DISKCOPY
(B) DISKCOMP
(C) DISKCOPY A: B/V
(D) FORMAT A: B:
Answer: (B) DISKCOMP
Q3. What command is used to reset a MODEM when using the “AT Command Set”?
(A) ATR
(B) ATZ
(C) DTR
(D) DCE
Answer: (B) ATZ
Q4. While working with MS-DOS, which command is used to undelete a bunch of files with extension DOC that you have just deleted?
(A) UNDELETE
(B) UNDELETE *.DOC
(C) UNDELETE/ALL
(D) UNDELETE/LIST
Answer: (B) UNDELETE *.DOC
Q5. Which internal DOS command clears the screen and places the DOS prompt in the upper left corner of the screen?
(A) cls
(B) close
(C) quit
(D) exit
Answer: (A) cls
Q6. Which DOS command would allow you to redirect a printer?
(A) Type
(B) Capture
(C) Mode
(D) Print
Answer:(C) Mode
Q7. Which command is used to delete the directory and all its contents in one step?
(A) DEL .
(B) RD
(C) DELTREE
(D) CD
Answer: (C) DELTREE
Q8. A __ boot is when DOS is restarted without turning off the computer.
(A) Warm
(B) Reboot
(C) Shutdown
(D) System up
Answer: (A) Warm
Q9. Which combination of keys allows you to perform a warm boot?
(A) Ctrl+ESC
(B) Ctrl+Alt+DEL
(C) Ctrl+Shift+DEL
(D) Ctrl+Shift+ENTER
Answer: (B) Ctrl+Alt+DEL
Q10. Filename extensions help identify certain files. What filename extension identifies executable files?
(A) INF
(B) PRO
(C) EXE
(D) SYS
Answer: (C) EXE
Q11. After searching the current directory where does command.com search next?
(A) C:\DOS\UTILITIES
(B) Config.sys
(C) Autoexec.bat
(D) The Path Statement
Answer: (D) The Path Statement
Q12. 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?
(A) Extended, Logical, Primary
(B) Primary, Extended, Logical
(C) Logical, Extended, Primary
(D) Logical, Primary, Extended
Answer: (C) Logical, Extended, Primary
Q13. Which two commands enable you to move between directories?
(A) CD
(B) CHDIR
(C) MOVE
(D) MOVE DIR
Answer: (A) CD
Q14. Which DOS command is used to detect, diagnose and repair logical and physical disk errors on both, uncompressed and double space compressed drive?
(A) DEFRAG
(B) DBLSPACE
(C) SCANDISK
(D) MSAV
Answer: (C) SCANDISK
Q15. What file contains commands that configure systems devices?
(A) Command.com
(B) Config.sys
(C) Autoexec.bat
(D) Win.ini
Answer: (B) Config.sys
Disk Operating System (DOS) MCQ – All Set
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