| 91. | The _____ scheme uses data patterns of size 2 and encodes the 2-bit patterns as one signal element belonging to a four-level signal. |
| Discuss |
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Answer: (b).2B1Q
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| 92. | The ______ scheme uses three levels (+V, 0, and -V) and three transition rules to move between the levels. |
| Discuss |
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Answer: (c).MLT-3
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| 93. | ______ substitutes eight consecutive zeros with 000VB0VB. |
| Discuss |
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Answer: (c).B8ZS
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| 95. | ASK, PSK, FSK, and QAM are examples of ________ conversion. |
| Discuss |
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Answer: (b).digital-to-analog
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| 96. | AM and FM are examples of ________ conversion. |
| Discuss |
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Answer: (c).analog-to-analog
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| 97. | In QAM, both ________ of a carrier frequency are varied. |
| Discuss |
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Answer: (c).amplitude and phase
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| 98. | If the baud rate is 400 for a QPSK signal, the bit rate is ________ bps. |
| Discuss |
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Answer: (c).800
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| 99. | If the bit rate for an ASK signal is 1200 bps, the baud rate is ________. |
| Discuss |
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Answer: (d).1200
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| 100. | If the bit rate for an FSK signal is 1200 bps, the baud rate is ________. |
| Discuss |
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Answer: (d).1200
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