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CSE MCQs :: OS MCQs

  1. CPU fetches the instruction from memory according to the value of:
  2. A.
    program counter
    B.
    status register
    C.
    instruction register
    D.
    program status word

  3. A memory buffer used to accommodate a speed differential is called:
  4. A.
    stack pointer
    B.
    cache
    C.
    accumulator
    D.
    disk buffer

  5. Which one of the following is the address generated by CPU?
  6. A.
    physical address
    B.
    absolute address
    C.
    logical address
    D.
    none of the mentioned

  7. Run time mapping from virtual to physical address is done by:
  8. A.
    memory management unit
    B.
    CPU
    C.
    PCI
    D.
    none of the mentioned

  9. Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called:
  10. A.
    fragmentation
    B.
    paging
    C.
    mapping
    D.
    none of the mentioned

  11. The address of a page table in memory is pointed by:
  12. A.
    stack pointer
    B.
    page table base register
    C.
    page register
    D.
    program counter

  13. Program always deals with:
  14. A.
    logical address
    B.
    absolute address
    C.
    physical address
    D.
    relative address

  15. The page table contains:
  16. A.
    base address of each page in physical memory
    B.
    page offset
    C.
    page size
    D.
    none of the mentioned

  17. What is compaction?
  18. A.
    a technique for overcoming internal fragmentation
    B.
    a paging technique
    C.
    a technique for overcoming external fragmentation
    D.
    a technique for overcoming fatal error

  19. Operating System maintains the page table for:
  20. A.
    each process
    B.
    each thread
    C.
    each instruction
    D.
    each address