Q. NRZ-L and NRZ-I both have an average signal rate of

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Q. The last step in Pulse Code Modulation (PCM) is

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Q. The relationship between data rate and signal rate depends on the value of

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Q. HDB3 substitutes four consecutive zeros with OOOV or BOOV depending on the number of nonzero pulses after

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Q. The minimum bandwidth of the digital signal is nb times greater than the bandwidth of the

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Q. In which scheme all the signal levels are on one side of the time axis?

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Q. Data encoding is not possible if

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Q. The Nyquist sampling rate is

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Q. How many communication channels are needed for serial transmission?

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Q. The block coding scheme that provides greater error detection capability than 4B/5B is

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Q. In synchronous transmission, we send bits one after the another without

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Q. The bit rate for 1000 baud, FSK, baud rate would be

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Q. A system is using NRZ-I to transfer 10-Mbps data. What would be minimum bandwidth

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Q. What is the number of bits per baud for PSK with four different phases

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Q. In Return to Zero (RZ), the signal changes not between bits but

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Q. Line coding, block coding and scrambling are three techniques of

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Q. The coding scheme that was designed to be used in combination with None Return to Zero- Invert (NRZ-I) is

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Q. In real life, most digital signals have bandwidth

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Q. The term that means data is sent over four wires at the same time is

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Q. The transmission that is used without the timing signal is called

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