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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) disk buffer
B) stack pointer
C) cache
D) accumulator
  • 3. Which one of the following is the address generated by CPU?
A) none of the mentioned
B) absolute address
C) logical address
D) physical address
  • 4. Run time mapping from virtual to physical address is done by
A) None of the mentioned
B) CPU
C) PCI
D) Memory management unit
  • 5. Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called?
A) paging
B) none of the mentioned
C) fragmentation
D) mapping
  • 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) physical address
B) logical address
C) absolute address
D) relative address
  • 8. The page table contains
A) page size
B) none of the mentioned
C) base address of each page in physical memory
D) page offset
  • 9. What is compaction?
A) a paging technique
B) a technique for overcoming fatal error
C) a technique for overcoming external fragmentation
D) a technique for overcoming internal fragmentation
  • 10. Operating System maintains the page table for
A) each address
B) each instruction
C) each process
D) each thread
  • 11. The address generated by the CPU is referred to as
A) Neither physical nor logical
B) Physical address
C) Logical address
D) None of the mentioned
  • 12. The address loaded into the memory address register of the memory is referred to as
A) Logical address
B) None of the mentioned
C) Logical address
D) Physical address
  • 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) relocation register
C) basic register
D) delocation register
  • 15. The size of a process is limited to the size of
A) external storage
B) physical memory
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) can never
B) may
C) must
D) has to be
  • 17. Swapping requires a
A) backing store
B) motherboard
C) keyboard
D) monitor
  • 18. The backing store is generally a
A) disk to provide direct access to the memory images
B) disk large enough to accommodate copies of all memory images for all users
C) fast disk
D) all of the mentioned
  • 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) ready queue
C) secondary storage
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) context – switch
B) waiting
C) all of the mentioned
D) execution
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