Operating System MCQ (Multiple Choice Questions and Answers)

Operating System MCQ (Multiple Choice Questions and Answers)

11. Which of the following is not an operating system?

  1. Oracle
  2. Windows
  3. Linux
  4. Dos

Answer : A
Explanation: Oracle is an RDBMS (Relational Database Management System). It is known as Oracle Database, Oracle DB, or only Oracle. The first database for enterprise grid computing is the Oracle database. So, Oracle is not an operating system.

12. The systems which allow only one process execution at a time, are called as ____________

  1. Uniprogramming systems
  2. Uniprocessing systems
  3. Unitasking systems
  4. None of the mentioned

Answer : B
Explanation: Those systems which allows more than one process execution at a time, are called multiprogramming systems and the systems which allow only one process execution at a time, are called as Uniprocessing systems which means only one processor at a time.

13. If there are multiple recycle bins for a hard disk

  1. You can set different size for each recycle bin
  2. You can make any one of them default recycle bin
  3. You can choose which recycle bin to use to store your deleted files
  4. None of the mentioned

Answer : A
Explanation: If there are multiple recycle bins for a hard disk, you can set different size for each recycle bin. So, option A is correct.

14. In the operating system each process has its own

  1. Address space and global variables
  2. Pending alarms, signals and signal handlers
  3. Open files
  4. All of the mentioned

Answer : D
Explanation: In an operating system, each process has its own: Address space and global variables, Pending alarms, signals and signal handlers, Open files.Hence, all of the above is correct.

15. Two operating modes of AT are

  1. Direct mode, indirect mode
  2. Virtual mode, dedicated mode
  3. Private mode, public mode
  4. Real mode, protected mode

Answer : D
Explanation: Two operating modes of AT are Real mode and protected mode.

16. Which is the first program run on a computer when the computer boots up?

  1. System software
  2. Operating system
  3. System operations
  4. None

Answer : B
Explanation: None

17. Which of the following refers to associative memory?

  1. The address of the data is generated by the CPU
  2. The address of the data is supplied by the users
  3. The data are accessed sequentially
  4. There is no need for an address i.e. the data is used as an address

Answer : D
Explanation: Associative memory means there is no need for an address i.e. the data is used as an address.

18.  Which of the following is a database of information about the windows operating system including customized settings and software installations?

  1. Registry
  2. Performance Monitor
  3. Changelog
  4. None of the mentioned

Answer : A
Explanation: Registry is a database of information about the windows operating system (OS) including customized settings and software installations.So, option A is correct.

19. Scheduling of threads is done by

  1. Output
  2. Operating System
  3. Input
  4. Memory

Answer : B
Explanation: Scheduling of threads is done by Operating System (OS). SO, option B is correct.

20. What else is a command interpreter called?

  1. Prompt
  2. Kernel
  3. Shell
  4. Command

Answer : C
Explanation: The command interpreter is also called as shell. So, option C is correct.

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