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Operating System MCQ For WBJECA ( SET - 7) VVI

WBJECA MCQ FOR NEW SYLLABUS

Operating System MCQ ( SET - 7)

O.S MCQ

  1. What is trap / Exception ?

    1. user generated interrupt caused by an error
    2. hardware generated interrupt caused by an error
    3. software generated interrupt caused by an error
    4. all of above
    Answer: C
    Explantion: None

  2. The number of processes completed per unit time is known as _________.

    1. Efficiency
    2. Capacity
    3. Output
    4. Throughput
    Answer: D
    Explantion: None

  3. Which module gived control of the CPU to the process selected by the short-term scheduler ?

    1. Scheduler
    2. Dispatcher
    3. Interrupt
    4. all of above
    Answer: B
    Explantion: None.

  4. Round robin scheduling falls under the category of _____________________.

    1. preemptive scheduling
    2. non preemptive scheduling
    3. both (A) and (B)
    4. none of above
    Answer: A
    Explantion: None

  5. An un-interruptible unit is known as ____________.

    1. Static
    2. Single
    3. Atomic
    4. none of these
    Answer: C
    Explantion: None

  6. The initial program that is run when the computer is powered up is called ________.

    1. Bootstrap program
    2. Boot Loader
    3. Boot Program
    4. All of above
    Answer: A
    Explantion: None

  7. A situation where several processes access and manipulate the same data concurrently and the outcome of the execution depends on the particular order in which access takes place is called ___________________.

    1. Aging
    2. Starvation
    3. Data consistency
    4. Race condition
    Answer: A
    Explantion: None

  8. The operation of the semaphore basically works on the basic __________ system call.

    1. hold()
    2. stop()
    3. block()
    4. wait()
    Answer: D
    Explantion: None

  9. The two steps of a process execution are______________.

    1. CPU & I/O Burst
    2. OS & Memory Burst
    3. IO & Burst
    4. all of above are possible
    Answer: A
    Explantion: None

  10. 10

    Semaphores are mostly used to implement _________.

    1. IPC Mechanisms
    2. System Protection
    3. System Calls
    4. all of above
    Answer: A
    Explantion: None

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