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Formative Test - 3
Contributed by: PRAN
  • 1. CPU fetches the instruction from memory according to the value of
A) program status word
B) status register
C) program counter
D) instruction register
  • 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) none of the mentioned
B) physical address
C) absolute address
D) logical address
  • 4. Run time mapping from virtual to physical address is done by
A) CPU
B) None of the mentioned
C) Memory management unit
D) PCI
  • 5. Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called?
A) mapping
B) none of the mentioned
C) fragmentation
D) paging
  • 6. The address of a page table in memory is pointed by
A) page table base register
B) stack pointer
C) program counter
D) page register
  • 7. Program always deals with
A) logical address
B) relative address
C) physical address
D) absolute address
  • 8. The page table contains
A) page offset
B) none of the mentioned
C) base address of each page in physical memory
D) page size
  • 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 instruction
B) each process
C) each address
D) each thread
  • 11. The address generated by the CPU is referred to as
A) None of the mentioned
B) Neither physical nor logical
C) Logical address
D) Physical address
  • 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) None of the mentioned
B) Virtual to physical mapper
C) Memory management unit
D) Memory mapping unit
  • 14. The base register is also known as the
A) relocation register
B) delocation 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) physical memory
D) external storage
  • 16. If execution time binding is being used, then a process ______ be swapped to a different memory space.
A) has to be
B) may
C) can never
D) must
  • 17. Swapping requires a
A) backing store
B) monitor
C) keyboard
D) motherboard
  • 18. The backing store is generally a
A) fast disk
B) all of the mentioned
C) disk large enough to accommodate copies of all memory images for all users
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) cpu
B) secondary storage
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) execution
B) all of the mentioned
C) waiting
D) context – switch
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