operating-system-mcqs - Set (2)

Correct Answer: Orange && Worng Answer: Red

1. Which Module gives control of the CPU to the process selected by the short-term scheduler ?

  • (A). Dispatcher
  • (B). Interrupt
  • (C). Schedular
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    2. Which scheduling algorithm allocates the CPU first to the process that requests the CPU first ?

  • (A). First come first served
  • (B). Shorted job
  • (C). Priority
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    3. A Process Control Block (PCB) does not contain which of the following :

  • (A). Program counter
  • (B). Stack
  • (C). Heap
  • (D). Boot strap program
    • View Answer

    Explanation: Not Avilable

    4. File type can be represented by :

  • (A). File extension
  • (B). File name
  • (C). File identifier
  • (D). Both (A) and (B)
    • View Answer

    Explanation: Not Avilable

    5. Because of virtual memory, the memory can be shared among

  • (A). Processes
  • (B). Threads
  • (C). Instructions
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    6. Swap space exists in

  • (A). CPU
  • (B). Primary memory
  • (C). Secondary memory
  • (D). None of the mentioned
    • View Answer

    Explanation: Not Avilable

    7. Effective access time is directly proportional to

  • (A). Hit rate
  • (B). Page-fault rate
  • (C). Memory access time
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    8. Linux is

  • (A). Single user, single tasking
  • (B). Single user, multitasking
  • (C). Multi user, multitasking
  • (D). Multi user, single tasking
    • View Answer

    Explanation: Not Avilable

    9. Which one of the following is deadlock avoidance algorithm

  • (A). FCFS
  • (B). Elevator algorithm
  • (C). Banker’s algorithm
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    10. Logical memory is broken into blocks of the same size called ______

  • (A). Pages
  • (B). Frames
  • (C). Backing store
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    11. The ______ is used as index into the page table.

  • (A). Page number
  • (B). Frame bit
  • (C). Page offset
  • (D). Frame offset
    • View Answer

    Explanation: Not Avilable

    12. A monitor is a type of ______

  • (A). Semaphore
  • (B). Low level synchronization construct
  • (C). High level synchronization construct
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    13. ______ is the layer of a computer system between the hardware and the user program.

  • (A). Operating system
  • (B). System environment
  • (C). Operating environment
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    14. Operating system is an example of ______

  • (A). System program
  • (B). Windows
  • (C). Application program
  • (D). None
    • View Answer

    Explanation: Not Avilable

    15. Run time mapping from virtual to physical address is done by :

  • (A). Memory management unit
  • (B). CPU
  • (C). PCB
  • (D). PCI
    • View Answer

    Explanation: Not Avilable

    16. The ______ register is read by the host to get input.

  • (A). Flow in
  • (B). Flow out
  • (C). Data in
  • (D). Data out
    • View Answer

    Explanation: Not Avilable

    17. Illegal address are trapped using the ______ bit.

  • (A). Error
  • (B). Protection
  • (C). Valid-invalid
  • (D). Access
    • View Answer

    Explanation: Not Avilable

    18. A system is in a safe state, only if there exists a :

  • (A). Safe location
  • (B). Safe resource
  • (C). Safe sequence
  • (D). All of these
    • View Answer

    Explanation: Not Avilable

    19. A problem encountered in multitasking when a process is perpetually denied necessary resources is called

  • (A). Deadlock
  • (B). Inversion
  • (C). Starvation
  • (D). Aging
    • View Answer

    Explanation: Not Avilable

    20. If a process fails, most operating system write the error information to a :

  • (A). Log file
  • (B). Another running process
  • (C). New file
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

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