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  1. Which command is used to delete all the files in the root directory of drive a

  2. A.

     A:\del

    B.

     Del *.* a:

    C.

     Del a:\

    D.

     Erase *.*

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  3. Which command is used to display a list of deleted files that DOS can undelete?

  4. A.

     Undelete *.*

    B.

     Undelete/all

    C.

     Undelete/list

    D.

     None of the above

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

  6. A.

     Undelete

    B.

     Undelete *.doc

    C.

     Undelete/all

    D.

     All of the above

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  7. Which file in MSDOS contain internal command that are loaded during booting process?

  8. A.

     Io.sys

    B.

     Msdos.sys

    C.

     Command.com

    D.

     Config.sys

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  9. Which is the valid filename assign in MS-DOS?

  10. A.

     Ram*.txt

    B.

     Ram?.doc

    C.

     Ram_$.txt

    D.

     None of above

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  11. Which is valid extension that user creates on operating system?

  12. A.

     Exe

    B.

     Com

    C.

     Sys

    D.

     Bat

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  13. Which of the following file names are invalid in MSDOS?

  14. A.

     MYFILE.DOS

    B.

     CHECK$.(1)

    C.

     Verified.###

    D.

     Qwerty.1?3

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

  16. 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

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  17. Which of the following statements is true in regard to diskcopy?

  18. 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

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  19. Which switch should be used in the DIR command to view files in all directories?

  20. A.

     /p

    B.

     /w

    C.

     /s

    D.

     /l

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