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Computer Fundamentals - Section 5 Multiple Questions and Answers.
| 26. | In MODEMS | ||
| A. | Several digital signals are multiplexed | ||
| B. | A digital signal changes some characteristic of a carrier wave | ||
| C. | Digital signal is amplified | ||
| D. | All of the above | ||
| 27. | Which is a secondary memory device? | ||
| A. | CPU | ||
| B. | ALU | ||
| C. | Floppy disk | ||
| D. | Mouse | ||
| 28. | A storage device which is used to store data & information external to the main storage is known as | ||
| A. | Buffer | ||
| B. | Backing storage | ||
| C. | PROM | ||
| D. | Accumulator | ||
| 29. | In a PC, how much memory is available to application software? | ||
| A. | 1024 KB | ||
| B. | 760 KB | ||
| C. | 640 KB | ||
| D. | 560 KB | ||
| 30. | For a memory system, the cycle time is | ||
| A. | same as the access time | ||
| B. | longer than the access time | ||
| C. | shorter than the access time | ||
| D. | submultiple of the access time | ||
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