Explore topic-wise MCQs in Computer Science.

This section includes 181 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.

101.

%_FAT stands for_%

A. File Accomodation Table
B. File Access Tape
C. File Allocation Table
D. File Activity Table
Answer» D. File Activity Table
102.

_ Which command is used to see the sub-directory structure of drive?$?

A. Tree
B. List
C. Subdir
D. Subtree
Answer» B. List
103.

_ Format command is used to$?

A. Prepare a blank disk
B. Create a new blank disk from a used one
C. Both of above
D. None of above
Answer» D. None of above
104.

_ The vol command is used to$?

A. See the value of list
B. See the variety of language
C. See the disk volume label
D. See the volume of largest
Answer» D. See the volume of largest
105.

_ FAT stands for$?

A. File Accomodation Table
B. File Access Tape
C. File Allocation Table
D. File Activity Table
Answer» D. File Activity Table
106.

_ If you don't know the current time, which command will you use to display$?

A. Copy
B. Ver
C. Time
D. Format
Answer» D. Format
107.

_ The batch file uses the extension$?

A. .BAT
B. .DOC
C. .PRG
D. .DOS
Answer» B. .DOC
108.

_ 3. What is the maximum length allowed for primary name of a computer file under DOS?$?

A. 8
B. 12
C. 3
D. None of the above
Answer» B. 12
109.

_ Which command in DOS can be used to recover accidentally deleted files?$?

A. UNDELETE
B. DELETE/CANCEL
C. RESTORE
D. RECOVER
Answer» B. DELETE/CANCEL
110.

_ While working with MS-DOS which command is used to combine file1 plus file2 into new file named file3?$?

A. Copy file3 file1+file2
B. Copy file1+file2 file3
C. Copy file1+file2+file3
D. Copy file2 file1+file3
Answer» C. Copy file1+file2+file3
111.

_ Which of the following statements is true in regard to diskcopy?$?

A. Copy and discopy are same
B. Discopy is a built in command in dos
C. Diskcopy can be used on hard disks
D. Diskcopy can be used with a floppy and a hard disk
Answer» D. Diskcopy can be used with a floppy and a hard disk
112.

_ Which file in MSDOS contain internal command that are loaded during booting process?$?

A. Io.sys
B. Msdos.sys
C. Command.com
D. Config.sys
Answer» D. Config.sys
113.

_ Which command is used to create root directory and FAT on disk?$?

A. Chkdsk
B. Command.com
C. Format
D. Fat
Answer» D. Fat
114.

_Maximum length of DOS command using any optional parameter is$?

A. 26 characters
B. 87 characters
C. 127 characters
D. None of above
Answer» D. None of above
115.

_Copy and Xcopy are same in the sense$?

A. Both are internal command of DOS
B. Both are external commands of DOS
C. Both can be used to copy file or group of files
D. Both a and b
Answer» D. Both a and b
116.

_Which of the following extensions suggest that the file is a backup copy.$?

A. Bak
B. Bas
C. Com
D. Txt
Answer» B. Bas
117.

_Which command displays comma for thousand separating on file size while listing?$?

A. Dir/w
B. Dir/s
C. Dir/b
D. Dir/c
Answer» E.
118.

_Which command creates a directory or subdirectory?$?

A. Dir
B. Mkdir
C. Md
D. Both b and c
Answer» E.
119.

_Which statement is correct?$?

A. Directories can be kept inside a file
B. Files can not be kept inside a directory
C. 1 millisec = 10 ^ 3 sec
D. None of above
Answer» D. None of above
120.

_To copy the hidden system files of DOS to another disk you can use the command$?

A. Copy
B. Ren
C. Sys
D. Diskcopy
Answer» D. Diskcopy
121.

_Which keys can be pressed quit without saving in DOS$?

A. Ctrl + A
B. Ctrl + B
C. Ctrl + C
D. Ctrl + D
Answer» D. Ctrl + D
122.

_Which statement is valid about "TIME" command?$?

A. Time command is used to display and allow changes to the system time
B. Time format can be changed by changing in country setting in config.sys file
C. MS DOS displays the time in 12-hour or 24-hour format
D. All of above
Answer» E.
123.

_Operating System is like a$?

A. Parliament
B. Secretary
C. Government
D. None of the above
Answer» D. None of the above
124.

_RESTORE command is used to$?

A. Restore files from disks made using the BACKUP command
B. Restore files which are deleted
C. Restore files from recycle bin
D. Restore files which are deleted recently
Answer» B. Restore files which are deleted
125.

_While working with MS-DOS which key is used to get the p[revious command used:$?

A. F3
B. F1
C. F6
D. F9
Answer» B. F1
126.

While working with Ms-Dos which command transfers a specific file from one disk to another?$?

A. Copy
B. Diskcopy
C. Time
D. Rename
Answer» B. Diskcopy
127.

DOS system file consists of$?

A. IBMBIO.COM, IBMDOS.COM, COMMAND.COM
B. COMMAND.COM, IBMBIO.COM, FORMAT.COM
C. SYS.COM,IBMBIO.COM,IBMDOS.COM
D. None of the above
Answer» B. COMMAND.COM, IBMBIO.COM, FORMAT.COM
128.

Which of the following operating does not implement multitasking truly?$?

A. Windows 98
B. Windows NT
C. Windows XP
D. MS DOS
Answer» E.
129.

While working with 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» C. Copy *.txt c:
130.

While working with MS-DOS which command is used to change the extension of all filenames ending with .txt to .doc?$?

A. Ren *.doc *.txt
B. Ren *.txt *.doc
C. Ren file.doc file.txt
D. Ren a: *.doc *.txt
Answer» C. Ren file.doc file.txt
131.

Which of the following statements in regard to directories is false?$?

A. Directories can exist inside directories
B. The root directory is always at the highest level
C. Directories with files can be deleted
D. Directories cannot be renamed
Answer» E.
132.

Which command is used to undelete delete a bunch of files with extension doc that you have just deleted$?

A. Undelete
B. Undelete *.doc
C. Undelete/all
D. All of the above
Answer» C. Undelete/all
133.

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

A. Copy a. *.txt
B. Copy *.txt a:
C. Copy *.txt c:
D. Copy *.txt all.txt
Answer» B. Copy *.txt a:
134.

External command in DOS are$?

A. Copy, edit, sys, format
B. Edit, sys, chkdsk
C. Chkdsk, prompt, date
D. Sys, ver, vol
Answer» C. Chkdsk, prompt, date
135.

Which command be used to ask you to confirm that you want to delete the directory?$?

A. Deltree
B. Deltree/f
C. Del *.*/p
D. Erase *.*
Answer» D. Erase *.*
136.

Which command will be used to display a file within the specified directory of pathname?$?

A. Dir \pathname
B. Dir \pathname\pathname
C. Dir/ch
D. Dir \pathname\filename
Answer» E.
137.

MS-DOS developed in$?

A. 1991
B. 1984
C. 1971
D. 1961
Answer» C. 1971
138.

Which command is used to backup in DOS 6+ Version$?

A. BACKUP
B. MSBACKUP
C. MSBACKEDUP
D. All of the above
Answer» C. MSBACKEDUP
139.

Which command is used to copy files?$?

A. Copy
B. Diskcopy
C. Type
D. All of the above
Answer» B. Diskcopy
140.

If you need to duplicate the entire disk, which command will you use?$?

A. Copy
B. Diskcopy
C. Chkdsk
D. Format
Answer» C. Chkdsk
141.

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

A. Dir/w
B. Dir a:
C. Dir /b
D. Dir /s
Answer» D. Dir /s
142.

MS-DOS developed in?

A. 1991
B. 1984
C. 1971
D. 1961
Answer» C. 1971
143.

Which command is used to backup in DOS 6+ Version?

A. BACKUP
B. MSBACKUP
C. MSBACKEDUP
D. All of the above
Answer» C. MSBACKEDUP
144.

If you need to duplicate the entire disk, which command will you use?

A. Copy
B. Diskcopy
C. Chkdsk
D. Format
Answer» C. Chkdsk
145.

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

A. Dir/w
B. Dir a:
C. Dir /b
D. Dir /s
Answer» D. Dir /s
146.

Which command will be used to display a file within the specified directory of pathname??

A. Dir \pathname
B. Dir \pathname\pathname
C. Dir/ch
D. Dir \pathname\filename
Answer» E.
147.

Which command be used to ask you to confirm that you want to delete the directory?

A. Deltree
B. Deltree/f
C. Del *.*/p
D. Erase *.*
Answer» D. Erase *.*
148.

Which command is used to copy files?

A. Copy
B. Diskcopy
C. Type
D. All of the above
Answer» B. Diskcopy
149.

External command in DOS are?

A. Copy, edit, sys, format
B. Edit, sys, chkdsk
C. Chkdsk, prompt, date
D. Sys, ver, vol
Answer» C. Chkdsk, prompt, date
150.

The time command is used to display _____ time.

A. US time
B. Greenwich Mean Time
C. Julian Time
D. System Time
Answer» E.