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