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Q1. Which of the following applies to external DOS commands?
(A) External commands reside in RAM until called
(B) External commands are stored on disk separately from COMMAND.COM
(C) External commands must always be used with the /e switch
(D) External commands can only be executed from a batch file
Answer: (B) External commands are stored on disk separately from COMMAND.COM
Q2. While working with MS-DOS, which command is used to copy all files from the currently logged drive and directory with the extension .TXT to the drive A?
(A) COPY A: *.TXT
(B) COPY *.TXT A:
(C) COPY *.TXT C:
(D) COPY *.TXT ALL.TXT
Answer: (B) COPY *.TXT A:
Q3. The __ switch instructs DOS to display the directory list in a wide format.
Answer: (A) /W
Q4. Which is LEAST likely to interfere with upgrading to a newer DOS version?
(A) ROM BIOS
(B) Video controller
(C) Compressed drives
(D) Existing backup files
Answer: (B) Video controller
Q5. Which command will prevent subsequent changes to the file CBT.EXE?
(A) RENAME + r CBT.EXE
(B) ATTRIB + r CBT.EXE
(C) COPY + r CBT.EXE
(D) MODE + r CBT.EXE
Answer: (B) ATTRIB + r CBT.EXE
Q6. While working with MS-DOS, which command is used to restore only those files modified since the last backup, from the drive A to the currently logged drive or directory?
(A) RESTORE A: ./S
(B) RESTORE A: ./M
(C) RESTORE A: ./N
(D) RESTORE A: ./L
Answer:(B) RESTORE A: ./M
Q7. While working with MS-DOS, which command is used to specify the colour display, 40 columns and color?
(A) MODE COLOUR
(C) MODE CO40
(D) MODE CHANGE
Answer: (C) MODE CO40
Q8. Which command is used to delete the directory that is empty?
(A) DEL .
Answer: (B) RD
Q9. When you create a subdirectory within a directory, the process is known as __
Answer: (D) nesting
Q10. In DOS, which of the following keys will bypass the CONFIG.SYS and AUTOEXEC.BAT files?
(D) None of the above
Answer: (B) F5
Q11. What is the order in which Command.Com searches for programs to execute?
(A) EXE, COM, BAT
(B) EXE, BAT, COM
(C) COM, EXE, BAT
(D) BAT, COM, EXE
Answer: (C) COM, EXE, BAT
Q12. While working with MS-DOS, which command is used to compare the disk in drive A with the disk in drive B, specifying to compare only first side of each disk, and only the first 8 sectors of each track?
(A) DISKCOPY A: B:/8
(B) DISKCOMP A: B:/l/8
(C) DISKCOMP A: B:/8
(D) DISKCOMP A: B:/l
Answer: (B) DISKCOMP A: B:/l/8
Q13. When MS-DOS formats a disk, it automatically creates the main directory on your disk, which is called the _ directory.
Answer: (B) root
Q14. To find out how much memory is available, you could type_________.
Answer: (B) MEM
Q15. After doing a low-level format, what would be the next step in configuring the hard drive in a system?
(A) Format DOS partition
(B) Install operating system
(C) Configure DMA channel and back up interrupt
(D) Partition hard disk
Answer: (D) Partition hard disk
Disk Operating System (DOS) MCQ – All Set
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