1) Which is the valid extension that user creates on operating system?

2) Operating System is like a ?

3) Format command used to?

4) Which is the valid fie name assign in MS-DOS?

5) Which command used to display the subdirectory structure of the currently logged drive and pause the screen display after each screen full of the information?

6) External command in DOS are ?

7) Which command is used to change the file name?

8) The vol command used to?

9) While working with MS-DOS which command is used to copy all files with extension .txt into one file named all .txt?

10) Which statement is valid about “TIME” command?

11) DEL command used to?

12) What is the name of the batch file that is automatically run when MSDOS is booted?

13) FAT stands for?

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

15) Which switch should be used in the DIR command to veiw files in all directories?

16) Which command used to delete all the files in the root directory of drive a?

17) Which command in DOS can be used to recover accidentally deleted files?

18) Xcopy command can apply?

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

20) What is the switch that is used to make sure that the copy command copied files correctly?

21) Which command used to see the disk volume lebel?

22) To copy the file command.com from drive c: to drive a:?Dr

23) Which keys can be pressed quit without saving in DOS?

24) Which command used to provide access to files located in other dirctories or disks?

25) The following command set is correct according to their function?

26) Which command is used to see the version/display the version?

27) The time command is used to display_____time?

28) In MS-DOS you can use small or capital letter of combination of both to enter a command but internally MS-DOS work with?

29) While working with MS-DOS which key is used to get the previous command used?

30) Which was the last version of MSDOS that was released separately?

31) DIR command used to?

32) Which command used to display a list of deleted files that DOS can undelete?

33) Generally, the DATE is entered in the form?

34) What will be the output of the command prompt $l$p$g?

35) Which command used to see the contents of a file?

36) RESTORE command is used to?

37) Which command used to undelete delete a bunch of files with extension .doc that you have just deleted?

38) Which file in MSDOS contain internal command that are loaded during booting process?

39) While working with MS-DOS, which command is used to copying the files to transfer from one Disk to another?

40) Which command is used to create root directory and FAT on disk?

41) Full form of MS-DOS is?

42) Which among the following are the best tools for fixing errors on disks?

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

44) Which of the following file names are invalid in MSDOS?

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

46) To display the list of  all the file of the disk you would type?

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

48) The deleted file in MS-DOS can be recovered if you use the command mention below immediately, the command is?

49) Which statement is correct?

50) CHKDSK can be used to find?