100 Updated DOS (Disk Operating System) Interview Objective Questions (Part -1)
Q – 1 The maximum length in dos command is?
Ans- 127 chars
Q – 2 While working with MS-DOS, which command is used to more file from one directory to another?
a. Rename
b. Copy
c. Move
d. Cp
Ans- c. Move
Q – 3 Which command is used to set a name to a disk in DOS?
a. VOLUME
b. VOL
c. LABEL
d. DISKLABEL
Ans- c. LABEL
Q – 4 Which of the following command display the name of files in sorted order?
a. Dir/o:n
b. Dir/so
c. Dir/an
d. Dir/ah
Ans- a. Dir/o:n
Q – 5 MSD.exe does not have information on:
a. Cache
b. Video
c. Operating System
d. Com or port
Ans- a. Cache
Q – 6 Which command displays the list of all previous commands entered by the used?
a. COMMANDS/ALL
b. KEYDOS
c. DOSKEY
d. DIR/ALL
Ans- c. DOSKEY
Q – 7 Where do you find user.dat?
a. C:windows
b. C:windowssystem32
c. C:windowssystem
d. C:
Ans- a. C:windows
Q – 8 What is the name of the latest server operating system developed by Microsoft?
a. Windows NT
b. Windows 2000
c. Windows XP
d. Windows 2003
Ans- d. Windows 2003
Q – 9 Which of the following operating does not implement multitasking truly?
a. Windows 98
b. Windows NT
c. Windows XP
d. MS DOS
Ans- d. MS DOS
Q – 10 Swapping:
a. Works best with many small partitions
b. Allows many programs to use memory simultaneously
c. Allows each program in turn to use the memory
d. Does not work with overlaying
Ans- c. Allows each program in turn to use the memory
Q – 11 The operating system creates ….. from the physical computer.
a. Virtual space
b. Virtual computers
c. Virtual device
d. None
Ans- b. Virtual computers
Q – 12 ….. share characteristics with both hardware and software.
a. Operating system
b. Software
c. Data
d. None
Ans- a. Operating system
Q – 13 ….. interface consists of things like program counter, registers, interrupts and terminals
a. Hardware
b. Software
c. Data
d. None
Ans- a. Hardware
Q – 14 …..is the first program run on a computer when the computer boots up.
a. System software
b. Operating system
c. System operations
d. None
Ans- b. Operating system
Q – 15 Multiprogramming system:
a. Are easier to develop than single programming system
b. Execute each job faster
c. Execute more jobs in the same time period
d. Are used only one large mainframe computers
Ans- c. Execute more jobs in the same time period
Q – 16 ….. transforms one interface into another interface.
a. Program
b. Software
c. Data
d. None
Ans- b. Software
Q – 17 The primary purpose of an operating system is ….. .
a. To make the most efficient use of the computer hardware
b. To allow people to use the computer
c. To keep systems programmers employed
d. To make computers easier to use
Ans- a. To make the most efficient use of the computer hardware
Q – 18 ….. is the layer of a computer system between the hardware and the user program.
a. Operating environment
b. Operating system
c. System environment
d. None
Ans- b. Operating system
Q – 19 ….. runs on computer hardware and serve as platform for other software to run on:
a. Operating system
b. Application software
c. System software
d. All
Ans- a. Operating system
Q – 20 Which type of command in DOS needs additional files for their execution?
a. Internal commands
b. External commands
c. Batch commands
d. Redirectors
Ans- b. External commands
Q – 21 While working with MS-DOS which command is used to copy all files with extension .txt into one file named all.txt?
a. Copy a: *.txt
b. Copy *.txt a:
c. Copy *.txt c:
d. Copy *.txt all.txt
Ans- d. Copy *.txt all.txt
Q – 22 While working with MS-DOS, which command is used to rename a file named file1.doc to file2.doc from a different directory called dir1?
a. Ren2.doc dirfile1.doc
b. Ren file1.doc file2.doc
c. Ren .docdir.doc
d. Ren dir1file1.doc file2.doc
Ans- d. Ren dir1file1.doc file2.doc
Q – 23 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
Ans- b. Copy *.txt a:
Q – 24 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
Ans- b. Copy file1+file2 file3
Q – 25 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
Ans- b. Ren *.txt *.doc
Q – 26 Which of the following file names are invalid in MSDOS?
a. MYFILE.DOS
b. CHECK$.(1)
c. Verified.###
d. Qwerty.1?3
Ans- d. Qwerty.1?3
Q – 27 Which is valid extension that user creates on operating system?
a. Exe
b. Com
c. Sys
d. Bat
Ans- d. Bat
Q – 28 Which command is used to undelete delete a bunch of files with extension doc that you have just deleted?
a. Undelete
b. Undelete *.doc
c. Undelete/all
d. All of the above
Ans- b. Undelete *.doc
Q – 29 Which was the last version of MSDOS that was released separately?
a. 5.0
b. 6.0
c. 6.11
d. 6.22
Ans- d. 6.22
Q – 30 Which of the following statements in regard to directories is false?
a. Directories can exist inside directories
b. The root directory is always at the highest level
c. Directories with files can be deleted
d. Directories cannot be renamed
Ans- d. Directories cannot be renamed
Q – 31 Which switch should be used in the DIR command to view files in all directories?
a. /p
b. /w
c. /s
d. /l
Ans- c. /s
Q – 32 Which of the following statements is true in regard to diskcopy?
a. Copy and discopy are same
b. Discopy is a built in command in dos
c. Diskcopy can be used on hard disks
d. Diskcopy can be used with a floppy and a hard disk
Ans- c. Diskcopy can be used on hard disks
Q – 33 Which file in MSDOS contain internal command that are loaded during booting process?
a. Io.sys
b. Msdos.sys
c. Command.com
d. Config.sys
Ans- c. Command.com
Q – 34 Which command is used to delete all the files extension .txt on the current drive and directory?
a. Del .txt
b. Erase .txt
c. Del *.txt
d. Del *.*/p
Ans- c. Del *.txt
Q – 35 Which command in DOS can be used to recover accidentally deleted files?
a. UNDELETE
b. DELETE/CANCEL
c. RESTORE
d. RECOVER
Ans- a. UNDELETE
Q – 36 Which is the valid filename assign in MS-DOS?
a. Ram*.txt
b. Ram?.doc
c. Ram_$.txt
d. None of above
Ans- c. Ram_$.txt
Q – 37 Which command is used to see the version?
a. Version
b. Ver
c. Verson
d. None of above
Ans- b. Ver
Q – 38 Which command is used to delete all the files in the root directory of drive a:
a. A:del
b. Del *.* a:
c. Del a:
d. Erase *.*
Ans- c. Del a:
Q – 39 Which command is used to display a list of deleted files that DOS can undelete?
a. Undelete *.*
b. Undelete/all
c. Undelete/list
d. None of the above
Ans- c. Undelete/list
Q – 40 Which command is used to create root directory and FAT on disk?
a. Chkdsk
b. Command.com
c. Format
d. Fat
Ans- c. Format
Q – 41 Which command is used to see the contents of a file?
a. Type
b. Copy
c. Ed
d. None of above
Ans- a. Type
Q – 42 Which command is used to see the sub-directory structure of drive?
a. Tree
b. List
c. Subdir
d. Subtree
Ans- a. Tree
Q – 43 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
Ans- a. Copy a. *.txt
Q – 44 Which command in DOS is used to display the version of MSDOS?
a. VERSION
b. VERIFY
c. VER
d. VERSN
Ans- c. VER
Q – 45 Which among the following are the best tools for fixing errors on disks?
a. Fdisk
b. Scandisk
c. Chkdsk
d. Fixdsk
Ans- b. Scandisk
Q – 46 Which command can be used to create the disk’s tracks and sectors?
a. Fdisk
b. Format
c. Chkdsk
d. Attrib
Ans- b. Format
Q – 47 What is the switch that is used to make sure that the copy command copied files correctly?
a. /a
b. /c
c. /s
d. /v
Ans- d. /v
Q – 48 What will be the output of the command prompt $l$p$g?
a.
b. C:>
c. C:>>
d. C:<>
Ans- a.
Q – 49 Which command is used to see the disk volume label?
a. Ver
b. Vol
c. Version
d. Volume
Ans- b. Vol
Q – 50 What is the name of the batch file that is automatically run when MSDOS is booted?
a. Run.bat
b. Config.sys
c. Config.bat
d. Autoexec.bat
Ans- d. Autoexec.bat
Q – 51 You can copy command.com to your disk from hard disk.
a. true
b. false
Ans- a. true
Q – 52 In MS-DOS you can use small or capital letter of combination of both to enter a command but internally MS-DOS work with.
a. Small letter
b. Capital letter
c. Both a and b
d. None of above
Ans- b. Capital letter
Q – 53 The maximum length in DOS commands is:
a. 80 chars
b. 127 chars
c. 100 chars
d. 8 chars
Ans- b. 127 chars
Q – 54 The vol command is used to:
a. see the value of list
b. see the veriety of language
c. see the disk volume label
d. see the volume of largest
Ans- c. see the disk volume label
Q – 55 Which command is used to provide access to files located in other directories or disks?
a. Tree
b. Path
c. Dir
d. Cd
Ans- b. Path
Q – 56 Which command is used to display the subdirectory structure of the currently logged drive and pause the screen display after each screen full of the information?
a. Tree
b. Deltree/f
c. Dir | more
d. Tree | more
Ans- d. Tree | more
Q – 57 The time command is used to display _____ time.
a. US time
b. Greenwich Mean Time
c. Julian Time
d. System Time
Ans- d. System Time
Q – 58 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
Ans- d. All of above
Q – 59 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
Ans- c. 1 millisec = 10 ^ 3 sec
Q – 60 Generally, the DATE is entered in the form:
a. DD-YY-MM
b. YY-DD-MM
c. MM-YY-DD
d. MM-DD-YY
Ans- d. MM-DD-YY
Q – 61 Which command is used to clear the screen:
a. Cls
b. Clear
c. Clscreen
d. All of above
Ans- a. Cls
Q – 62 xcopy command can copy:
a. individual files or group of files
b. directories including subdirectories
c. to diskette of a different capacity
d. all of above
Ans- d. all of above
Q – 63 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
Ans- a. Restore files from disks made using the BACKUP command
Q – 64 While working with MS-DOS, which command is used to copying the files to transfer from one PC to another one?
a. Rename
b. Path
c. Dir
d. Copy
Ans- d. Copy
Q – 65 Which command is used to change the file name?
a. Ren
b. Rename
c. Both of above
d. None of above
Ans- c. Both of above
Q – 66 The following command set is correct according to their function:
a. RD can MD
b. DEL and ERASE
c. CD and RD
d. COPY and RENAME
Ans- b. DEL and ERASE
Q – 67 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
Ans- c. Both of above
Q – 68 Operating System is like a:
a. Parliament
b. Secretary
c. Government
d. None of the above
Ans- c. Government
Q – 69 Full form of MS-DOS is:
a. Micro System Disk Operating System
b. Micro Simple Disk Operating System
c. Micro Soft Disk Operating System
d. Micro Sort Disk Operating System
Ans- c. Micro Soft Disk Operating System
Q – 70 Which command is used to make a new directory?
a. Md
b. Cd
c. Rd
d. None of above
Ans- a. Md
Q – 71 FAT stands for:
a. File Accomodation Table
b. File Access Tape
c. File Allocation Table
d. File Activity Table
Ans- c. File Allocation Table
Q – 72 While working with MS-DOS which key is used to get the p[revious command used:
a. F3
b. F1
c. F6
d. F9
Ans- a. F3
Q – 73 The deleted file in MS-DOS can be recovered if you use the command mention below immediately, the command is:
a. DO NOT DELETE
b. NO DELETE
c. UNDELETE
d. ONDELETE
Ans- c. UNDELETE
Q – 74 To copy the file command.com from drive c: to drive a:
a. Drive c: copy drive a:command.com
b. C:A: copy command.com
c. Copy c:command.com a:
d. Both b and c
Ans- c. Copy c:command.com a:
Q – 75 CHKDSK can be used to find:
a. Disk’s bad portion
b. Occupied space
c. Free space
d. All of above
Ans- d. All of above
Q – 76 DIR command is used to:
a. Display a list of files in a directory
b. Display contents of files in directory
c. Display type of files in a sub directory
d. All of above
Ans- a. Display a list of files in a directory
Q – 77 CHKDSK command is used to:
a. Analyze the hard disk error
b. Diagnose the hard disk error
c. Report the status of files on disk
d. All of the above
Ans- d. All of the above
Q – 78 In which version of DOS. CHKDSK command has been changed to SCANDISK?
a. 5.0
b. 6.2
c. 6.0
d. 6.2
Ans- d. 6.2
Q – 79 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 *.*
Ans- c. Del *.*/p
Q – 80 DEL command is used to:
a. Delete files
b. Delete directory
c. Delete labels
d. Delete contents of file
Ans- a. Delete files
Q – 81 Which command is used to get the current date only?
a. Date
b. Time
c. Second
d. All of the above
Ans- a. Date
Q – 82 Disk copy command in DOS is used to:
a. Copy a file
b. Copy contents of one floppy disk to another
c. Copy contents of CD-ROM to another
d. All of the above
Ans- b. Copy contents of one floppy disk to another
Q – 83 Which keys can be pressed quit without saving in DOS:
a. Ctrl + A
b. Ctrl + B
c. Ctrl + C
d. Ctrl + D
Ans- c. Ctrl + C
Q – 84 External command in DOS are:
a. Copy, edit, sys, format
b. Edit, sys, chkdsk
c. Chkdsk, prompt, date
d. Sys, ver, vol
Ans- b. Edit, sys, chkdsk
Q – 85 The command used to copy a file named temp.doc from drive C: to drive A: is:
a. Copy temp.doc to a:
b. Copy c:temp.doc a:
c. Copy c: a:
d. Copy temp a: c:
Ans- b. Copy c:temp.doc a:
Q – 86 SYS command is used to:
a. Copy DOS system files to new disk
b. Copy DOS configuration files to a new disk
c. Update the DOS system files
d. None of above
Ans- a. Copy DOS system files to new disk
Q – 87 Which command is used to backup in DOS 6+ Version?
a. BACKUP
b. MSBACKUP
c. MSBACKEDUP
d. All of the above
Ans- b. MSBACKUP
Q – 88 To copy the hidden system files of DOS to another disk you can use the command:
a. Copy
b. Ren
c. Sys
d. Diskcopy
Ans- c. Sys
Q – 89 Which command is used to copy files?
a. Copy
b. Diskcopy
c. Type
d. All of the above
Ans- a. Copy
Q – 90 Internal command in Dos are:
a. Cls, rd label
b. Dir, ren, sys
c. Time, type, dir
d. Del, disk copy, label
Ans- c. Time, type, dir
Q – 91 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
Ans- c. Both can be used to copy file or group of files
Q – 92 Which command be used to clear the screen and display the operating system prompt on the first line of the display?
a. Cd
b. Md
c. Rename
d. cls
Ans- d. cls
Q – 93 Which file is the batch file that is read while booting a computer?
a. Autoexec.bat
b. Auto-batch
c. Autoexecutive.bat
d. Auto.bat
Ans- a. Autoexec.bat
Q – 94 Maximum length of DOS command using any optional parameter is:
a. 26 characters
b. 87 characters
c. 127 characters
d. None of above
Ans- c. 127 characters
Q – 95 MS-DOS developed in:
a. 1991
b. 1984
c. 1971
d. 1961
Ans- b. 1984
Q – 96 In which year the first operating system was developed?
a. 1910
b. 1940
c. 1950
d. 1980
Ans- c. 1950
Q – 97 An entire path name, consisting of several sub-directory names can contain upto:
a. 13 character
b. 36 character
c. 63 character
d. 53 character
Ans- c. 63 character
Q – 98 Which command displays current directory name or change from one to another?
a. Chdir
b. Cd
c. Mkdir
d. Both a and b
Ans- d. Both a and b
Q – 99 Which command displays the directory list including files in tree structure?
a. Dir/s/f
b. Tree/f
c. Tree/s/f
d. Dir/f
Ans- b. Tree/f
Q – 100 Which command creates a directory or subdirectory?
a. Dir
b. Mkdir
c. Md
d. Both b and c
Ans- d. Both b and c