| 11. | The I/O interface required to connect the I/O device to the bus consists of ______ |
| a. | Address decoder and registers |
| b. | Control circuits |
| c. | Both a and b |
| d. | Only b |
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Answer: (c).Both a and b
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| 12. | To reduce the memory access time we generally make use of ______ . |
| a. | Heaps |
| b. | Higher capacity RAM’s |
| c. | SDRAM’s |
| d. | Cache’s |
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Answer: (d).Cache’s
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| 13. | ______ is generally used to increase the apparent size of physical memory . |
| a. | Secondary memory |
| b. | Virtual memory |
| c. | Hard-disk |
| d. | Disks |
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Answer: (b).Virtual memory
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| 14. | MFC stands for |
| a. | Memory Format Caches. |
| b. | Memory Function Complete. |
| c. | Memory Find Command. |
| d. | Mass Format Command. |
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Answer: (b).Memory Function Complete.
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| 15. | The time delay between two successive initiation of memory operation _______ . |
| a. | Memory access time |
| b. | Memory search time |
| c. | Memory cycle time |
| d. | Instruction delay |
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Answer: (c).Memory cycle time
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| 16. | The decoded instruction is stored in ______ . |
| a. | IR |
| b. | PC |
| c. | Registers |
| d. | MDR |
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Answer: (a).IR
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| 17. | The instruction -> Add LOCA,R0 does, |
| a. | Adds the value of LOCA to R0 and stores in the temp register |
| b. | Adds the value of R0 to the address of LOCA |
| c. | Adds the values of both LOCA and R0 and stores it in R0 |
| d. | Adds the value of LOCA with a value in accumulator and stores it in R0 |
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Answer: (c).Adds the values of both LOCA and R0 and stores it in R0
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| 18. | Which registers can interact with the secondary storage ? |
| a. | MAR |
| b. | PC |
| c. | IR |
| d. | R0 |
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Answer: (a).MAR
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| 19. | During the execution of a program which gets initialized first ? |
| a. | MDR |
| b. | IR |
| c. | PC |
| d. | MAR |
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Answer: (c).PC
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| 20. | Which of the register/s of the processor is/are connected to Memory Bus ? |
| a. | PC |
| b. | MAR |
| c. | IR |
| d. | Both a and b |
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Answer: (b).MAR
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