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Operating System MCQ For WBJECA ( SET - 12)

WBJECA MCQ FOR NEW SYLLABUS

Operating System MCQ ( SET - 12)

O.S MCQ

  1. The address of the next instruction to be executed by the current process is provided by the

    1. Program counter
    2. pipe line
    3. CPU registers
    4. Process stack
    Answer: A
    Explantion: None

  2. What is a long-term scheduler ?

    1. it selects which process has to be executed next and allocates CPU
    2. it selects which process has to be brought into the ready queue
    3. it selects which process to remove from memory by swapping
    4. all of the above
    Answer: B
    Explantion: None

  3. The primary distinction between the short term scheduler and the long term scheduler is:

    1. The frequency of their execution
    2. The length of their queues
    3. The type of processes they schedule
    4. none of the above
    Answer: A
    Explantion: None.

  4. In a multi programming environment :

    1. the programs are developed by more than one person
    2. the processor executes more than one process at a time
    3. a single user can execute many programs at the same time
    4. More than one process resides in the memory
    Answer: D
    Explantion: None

  5. When the process issues an I/O request :

    1. it is placed in a waiting queue
    2. it is placed in an I/O queue
    3. it is placed in the job queue
    4. it is placed in ready queue
    Answer: B
    Explantion: None

  6. What is a long-term scheduler ?

    1. it selects which process has to be executed next and allocates CPU
    2. it selects which process has to be brought into the ready queue
    3. it selects which process to remove from memory by swapping
    4. all of the above
    Answer: C
    Explantion: None

  7. In a time-sharing operating system, when the time slot given to a process is completed , the process goes from the running state to the :

    1. Suspended state
    2. Blocked state
    3. Terminated state
    4. Ready sate
    Answer: B
    Explantion: None

  8. Which of the following does not interrupt a running process ?

    1. Timer
    2. Power failure
    3. A device
    4. Scheduler process
    Answer: D
    Explantion: None

  9. What is a short-trem scheduler ?

    1. it selects which process has to be executed next and allocates CPU
    2. it selects which process has to be brought into the ready queue
    3. it selects which process to remove from memory by swapping
    4. none of the above
    Answer: A
    Explantion: None

  10. 10

    Suppose that a process is in " Blocked" state waiting for some I/O service. When the service is completed , it goes to the :

    1. Ready state
    2. Terminated state
    3. Suspended state
    4. Running state
    Answer: A
    Explantion: None

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