| 51. | _______ encoding has a transition at the beginning of each 0 bit. |
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Answer: (c).Differential Manchester
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| 52. | PCM is an example of _______ conversion. |
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Answer: (d).analog-to-digital
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| 53. | If the frequency spectrum of a signal has a bandwidth of 500 Hz with the highest frequency at 600 Hz, what should be the sampling rate, according to the Nyquist theorem? |
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Answer: (d).1200 samples/s
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| 54. | The Nyquist theorem specifies the minimum sampling rate to be_______. |
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Answer: (d).twice the highest frequency of a signal
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| 55. | Which of the following encoding methods does not provide for synchronization? |
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Answer: (a).NRZ-L
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| 56. | Which encoding method uses alternating positive and negative values for 1s? |
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Answer: (d).AMI
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| 57. | Which quantization level results in a more faithful reproduction of the signal? |
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Answer: (d).32
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| 58. | Block coding can help in _______ at the receiver. |
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Answer: (d).both (a) and (b)
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| 59. | In _______ transmission, a start bit and a stop bit frame a character byte. |
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Answer: (a).asynchronous serial
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| 60. | In asynchronous transmission, the gap time between bytes is _______. |
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Answer: (b).variable
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