Recents in Beach

Operating System MCQ For WBJECA ( SET - 3)

WBJECA MCQ FOR NEW SYLLABUS

Operating System MCQ ( SET - 3)

O.S MCQ

  1. Page fault occurs when ?

    1. one tries to divede a number by 0
    2. the page is not in main memory
    3. the page is corrupted by application software
    4. the page is main memory
    Answer: B
    Explantion: None

  2. Dijkstra's banking algorithm in an operating system solves the problem of ?

    1. Deadlock recovery
    2. Deadlock avoidance
    3. Context switching
    4. Mutual exclusion
    Answer: B
    Explantion: None

  3. Fence register is used for ?

    1. memory protection
    2. file protection
    3. CPU protection
    4. all of these
    Answer: A
    Explantion: None.

  4. Disk scheduling involves deciding ?

    1. the order in which disk access requests must be serviced
    2. the physical location where files should be accessed in tthe disk
    3. Which disk should be accessed next
    4. all of above
    Answer: A
    Explantion: None

  5. Virtual memory is ____________ ?

    1. An illusion of an extremely large memory
    2. An extremely large main memory
    3. An extremely large secondary memory
    4. All of above
    Answer: A
    Explantion: None

  6. Necessary conditions for deadlock are ?

    1. Mutual exclusion and partial allocation
    2. None-preemption and circular wait
    3. both A and B
    4. None of these
    Answer: c
    Explantion: None

  7. Semaphores are used to solve the problem of ?

    1. process synchronization
    2. mutual exclusion
    3. race condition
    4. both (A) and (B)
    Answer: D
    Explantion: None

  8. Dirty bit is used to show the ______

    1. page that is modified after being loaded into cache memory
    2. page that is less frequently accessed
    3. Wrong page in the memory
    4. page with corrupted data
    Answer: A
    Explantion: None

  9. What is Fragmentation ?

    1. fragments of memory words used in a page
    2. dividing the secondary memory into equal sized fragments
    3. fragments of memory words unused in a page
    4. dividing the main memory into equal-sized fragments
    Answer: C
    Explantion: None

  10. 10

    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. TERMINATED state
    2. SUSPENDED state
    3. BLOCKED state
    4. READY state
    Answer: D
    Explantion: None

Tags:

Post a Comment

0 Comments