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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) cache
C) accumulator
D) disk buffer
  • 3. Which one of the following is the address generated by CPU?
A) logical address
B) physical address
C) none of the mentioned
D) absolute address
  • 4. Run time mapping from virtual to physical address is done by
A) PCI
B) Memory management unit
C) CPU
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) paging
B) mapping
C) fragmentation
D) none of the mentioned
  • 6. The address of a page table in memory is pointed by
A) stack pointer
B) page table base register
C) page register
D) program counter
  • 7. Program always deals with
A) absolute address
B) logical address
C) physical address
D) relative address
  • 8. The page table contains
A) page size
B) page offset
C) none of the mentioned
D) base address of each page in physical memory
  • 9. What is compaction?
A) a technique for overcoming fatal error
B) a technique for overcoming external fragmentation
C) a paging technique
D) a technique for overcoming internal fragmentation
  • 10. Operating System maintains the page table for
A) each thread
B) each address
C) each instruction
D) each process
  • 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) None of the mentioned
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) Virtual to physical mapper
D) None of the mentioned
  • 14. The base register is also known as the
A) delocation register
B) relocation register
C) relocation register
D) basic register
  • 15. The size of a process is limited to the size of
A) secondary storage
B) external storage
C) none of the mentioned
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) has to be
D) may
  • 17. Swapping requires a
A) backing store
B) keyboard
C) motherboard
D) monitor
  • 18. The backing store is generally a
A) all of the mentioned
B) disk large enough to accommodate copies of all memory images for all users
C) fast disk
D) disk to provide direct access to the memory images
  • 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) wait queue
D) cpu
  • 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) context – switch
C) execution
D) waiting
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