Q. The checksum is used in the Internet by several protocols although not at the

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Q. A simple parity-check code can detect

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Q. The hamming distance can easily be found if we apply the

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Q. In subtraction of modulo-2 arithmetic, 0-1 =

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Q. In modulo-N arithmetic, we use only the integers in the range

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Q. To detect or correct errors, we send extra bits with data. It is called

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Q. A good polynomial generator of the cyclic code have at least

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Q. The dataword is organized in the form of

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Q. A simple parity-check code is the most familiar

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Q. What are the bits transmitted for the NRZ-L system?

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Q. What are the bits transmitted for the return to zero system?

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Q. What are the bits transmitted in the differential Manchester coding?

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Q. What are the bits transmitted for the AMI and Pseudoternary System?

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Q. Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10 kHz between the channels to prevent interference?

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Q. Find the checksum byte for the following data words:
10110011, 10101011, 01011010, 11010101

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Q. Generate the CRC codeword for the message x^3+1 using the generator polynomial x^3+x+1.

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Q. Generate the CRC codeword for the data word 1101011011 using generator 10011.

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Q. What is the hamming distance between these 2 codes: 10010010 and 11011001?

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Q. What is the hamming code for the data: 1001101?

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Q. The channel capacity is 100 Mbps, the frame length is 10000 bits and the arrival rate is 5000 frames/sec. Calculate the mean time delay.

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