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Computer Science :: Operating System

  1. Which of the following command is used to switch between the window programs?

  2. A.

     Alt+Tab

    B.

     Alt+F4

    C.

     Ctrl+Tab

    D.

     None of the above


  3. To prevent the addition and deletion of files on a disk or tape we use

  4. A.

     Format

    B.

     Write protect

    C.

     Create back up

    D.

     None of above


  5. During the boot process, the ..... looks for the system file

  6. A.

     CD

    B.

     BIOS

    C.

     CPU

    D.

     DVD


  7. Which of the following resources must be protected by the operating system?

  8. A.

     I/O

    B.

     Memory

    C.

     CPU

    D.

     All of the above


  9. What are the two types of Semaphore?

  10. A.

     Digital Semaphores and Binary Semaphores

    B.

     Analog Semaphores and Octal Semaphores

    C.

     Counting Semaphores and Binary Semaphores

    D.

     Critical Semaphores and System Semaphores


  11. Who is called a supervisor of computer activity?

  12. A.

     CPU

    B.

     OS

    C.

     Control Unit

    D.

     Application Program


  13. Font folder is located on

  14. A.

     Program folder

    B.

     Ms Word file

    C.

     Control Panel folder

    D.

     Desktop folder


  15. From where do you change mouse setting?

  16. A.

     Setting >> mouse

    B.

     Hardware setting

    C.

     Control panel >> mouse

    D.

     None of the above


  17. Work group means

  18. A.

     Computer in network

    B.

     Individual user

    C.

     Connection

    D.

     All of the above


  19. The core of operating system is:

  20. A.

     Unix

    B.

     Kernel

    C.

     Command.com

    D.

     None of these