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| Q. |
Which method is called as differential encoding? |
| A. | nrz-l |
| B. | nrz-m |
| C. | nrz-s |
| D. | none of the mentioned |
| Answer» B. nrz-m | |
| Explanation: in nrz-m, logic 1 is represented by a change in voltage level and logic 0 is represented by no change in level. this is called as differential encoding. | |
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