Recents in Beach

Operating System MCQ For WBJECA ( SET - 6)

WBJECA MCQ FOR NEW SYLLABUS

Operating System MCQ ( SET - 6)

O.S MCQ

  1. If the time quantum size is 2 unites of time and there is only one job of 14 time units in aready queue, the round-robin scheduling algorithm will cause ____________ context switches.

    1. 6
    2. 7
    3. 8
    4. 5
    Answer: A
    Explantion: None

  2. 'Aging' is _______________________ ?

    1. keeping track of cache contents
    2. keeping track of waht pages are currently residing in memory
    3. increasing the priority of jobs to ensure termination in a finite time
    4. Both (B) and (C)
    Answer: C
    Explantion: None

  3. A semaphore :

    1. must be accessed from only one process
    2. can be accessed from multiple processes
    3. is a binary mutex
    4. all of these
    Answer: B
    Explantion: None.

  4. The Processor is an example of computer _____________.

    1. program
    2. software
    3. hardware
    4. none of these
    Answer: C
    Explantion: None

  5. Resources are allocated to the process on non sharable basis is

    1. circular wait
    2. no premtion
    3. mutual exclusion
    4. hold and wait
    Answer: C
    Explantion: None

  6. Device drivers are that ____________

    1. short, special purpose programs
    2. internal part of operating system
    3. both (A) and (B)
    4. none of above
    Answer: A
    Explantion: None

  7. Usage of Pre-emption and Transaction Rollback prevents _________ ?

    1. Data manipulation
    2. Unauthorized usage of data file
    3. File pre-emption
    4. Deadlock situation
    Answer: D
    Explantion: None

  8. The Process Control Block is ________

    1. Data Structure
    2. A Block In Memory
    3. Process Type Variable
    4. A Secondary Storage Section
    Answer: A
    Explantion: None

  9. Simplest way of deadlock recovery is _________ ?

    1. preempt resource
    2. Lock one of the processes
    3. kill one of the processes
    4. roll back
    Answer: C
    Explantion: None

  10. 10

    Which of the following is incorrect for virtual memory ?

    1. More I/O is required
    2. Faster and easy swapping of process
    3. Large programs can be writen
    4. More adderssable memory available
    Answer: A
    Explantion: None

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