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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) program status word
C) program counter
D) instruction register
  • 2. A memory buffer used to accommodate a speed differential is called
A) stack pointer
B) accumulator
C) cache
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) Memory management unit
B) CPU
C) None of the mentioned
D) PCI
  • 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) paging
D) mapping
  • 6. The address of a page table in memory is pointed by
A) program counter
B) page register
C) page table base register
D) stack pointer
  • 7. Program always deals with
A) relative address
B) absolute address
C) logical address
D) physical address
  • 8. The page table contains
A) base address of each page in physical memory
B) page size
C) page offset
D) none of the mentioned
  • 9. What is compaction?
A) a paging technique
B) a technique for overcoming internal fragmentation
C) a technique for overcoming external fragmentation
D) a technique for overcoming fatal error
  • 10. Operating System maintains the page table for
A) each thread
B) each instruction
C) each process
D) each address
  • 11. The address generated by the CPU is referred to as
A) None of the mentioned
B) Physical address
C) Logical address
D) Neither physical nor logical
  • 12. The address loaded into the memory address register of the memory is referred to as
A) Physical address
B) Logical address
C) Logical address
D) None of the mentioned
  • 13. The run time mapping from virtual to physical addresses is done by a hardware device called the
A) Virtual to physical mapper
B) None of the mentioned
C) Memory mapping unit
D) Memory management unit
  • 14. The base register is also known as the
A) relocation register
B) basic register
C) delocation register
D) relocation register
  • 15. The size of a process is limited to the size of
A) physical memory
B) external storage
C) none of the mentioned
D) secondary storage
  • 16. If execution time binding is being used, then a process ______ be swapped to a different memory space.
A) must
B) has to be
C) may
D) can never
  • 17. Swapping requires a
A) monitor
B) backing store
C) keyboard
D) motherboard
  • 18. The backing store is generally a
A) disk to provide direct access to the memory images
B) fast disk
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) ready queue
B) secondary storage
C) cpu
D) wait 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) all of the mentioned
B) waiting
C) execution
D) context – switch
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