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