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  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

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

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  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

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  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

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  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

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  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

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

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  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

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  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

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

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