Disk Operating System Dos(Computer Science ) Questions and answers for exam Preparation

Question 1. What is the name of the batch file that is automatically run when MSDOS is booted?

Run.bat
Config.sys
Config.bat
Autoexec.bat

Explanation:-

Answer: Option D. -> Autoexec.bat

Question 2. What is the switch that is used to make sure that the copy command copied files correctly

/a
/c
/s
/v

Explanation:-

Answer: Option D. -> /v

Question 3. What will be the output of the command prompt $l$p$g?

Explanation:-

Answer: Option D. -> /v

Question 4. Which among the following are the best tools for fixing errors on disks?

Fdisk
Scandisk
Chkdsk
Fixdsk

Explanation:-

Answer: Option B. -> Scandisk

Question 5. Which command can be used to create the disk's tracks and sectors?

Fdisk
Format
Chkdsk
Attrib

Explanation:-

Answer: Option B. -> Format

Question 6. Which command in DOS can be used to recover accidentally deleted files?

UNDELETE
DELETE/CANCEL
RESTORE
RECOVER

Explanation:-

Answer: Option A. -> UNDELETE

Question 7. Which command in DOS is used to display the version of MSDOS?

VERSION
VERIFY
VER
VERSN

Explanation:-

Answer: Option C. -> VER

Question 8. Which command is used to copy all files from drive a with extension .txt to the currently logged drive and directory?

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

Explanation:-

Answer: Option A. -> Copy a. *.txt

Question 9. Which command is used to create root directory and FAT on disk?

Chkdsk
Command.com
Format
Fat

Explanation:-

Answer: Option C. -> Format

Question 10. Which command is used to delete all the files extension .txt on the current drive and directory?

Del .txt
Erase .txt
Del *.txt
Del *.*/p

Explanation:-

Answer: Option C. -> Del *.txt