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Formative Test - 3
Contributed by: PRAN
  • 1. CPU fetches the instruction from memory according to the value of
A) status register
B) instruction register
C) program counter
D) program status word
  • 2. A memory buffer used to accommodate a speed differential is called
A) cache
B) stack pointer
C) accumulator
D) disk buffer
  • 3. Which one of the following is the address generated by CPU?
A) logical address
B) physical address
C) absolute address
D) none of the mentioned
  • 4. Run time mapping from virtual to physical address is done by
A) CPU
B) Memory management unit
C) PCI
D) None of the mentioned
  • 5. Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called?
A) none of the mentioned
B) fragmentation
C) mapping
D) paging
  • 6. The address of a page table in memory is pointed by
A) program counter
B) page register
C) stack pointer
D) page table base register
  • 7. Program always deals with
A) logical address
B) physical address
C) absolute address
D) relative address
  • 8. The page table contains
A) page offset
B) base address of each page in physical memory
C) page size
D) none of the mentioned
  • 9. What is compaction?
A) a technique for overcoming external fragmentation
B) a technique for overcoming fatal error
C) a paging technique
D) a technique for overcoming internal fragmentation
  • 10. Operating System maintains the page table for
A) each address
B) each thread
C) each instruction
D) each process
  • 11. The address generated by the CPU is referred to as
A) Neither physical nor logical
B) Logical address
C) Physical address
D) None of the mentioned
  • 12. The address loaded into the memory address register of the memory is referred to as
A) None of the mentioned
B) Logical address
C) Physical address
D) Logical address
  • 13. The run time mapping from virtual to physical addresses is done by a hardware device called the
A) Memory mapping unit
B) Memory management unit
C) None of the mentioned
D) Virtual to physical mapper
  • 14. The base register is also known as the
A) delocation register
B) relocation register
C) basic register
D) relocation register
  • 15. The size of a process is limited to the size of
A) none of the mentioned
B) secondary storage
C) external storage
D) physical memory
  • 16. If execution time binding is being used, then a process ______ be swapped to a different memory space.
A) must
B) can never
C) may
D) has to be
  • 17. Swapping requires a
A) motherboard
B) monitor
C) keyboard
D) backing store
  • 18. The backing store is generally a
A) fast disk
B) disk to provide direct access to the memory images
C) all of the mentioned
D) disk large enough to accommodate copies of all memory images for all users
  • 19. The ________ consists of all processes whose memory images are in the backing store or in memory and are ready to run.
A) secondary storage
B) cpu
C) wait queue
D) ready queue
  • 20. The _________ time in a swap out of a running process and swap in of a new process into the memory is very high.
A) waiting
B) all of the mentioned
C) context – switch
D) execution
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