• A channel has maximum bandwidth of 40[Mhz] and a signal to noise ratio of 63. Is it possible to transmit at rates of 160 [Mb/sec]? If so how many levels per symbols should be used?
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• A channel has maximum data rate of 4 [Mbits/sec], round trip time delay of 50 [ms] and frames of fixed size of 500 bytes. If we are using a sliding window protocol what would be the ideal window size?  If we use go-back-n what would be the minimum number of bits to use for the sequence number? If we use selective repeat what would be the minimum number of bits to use for the sequence number?
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• Explain how Manchester encoding works and what are the advantages of Manchester over other encoding schemes like NRZ or NRZI.