) What is the difference between the bit rate and baud rate and how they are related? If the baud rate of a signal is 4,000 and the number of signal levels used is 18. calculate the bit rate Why can't there be channels of infinite bandwidth? Explain. With respect to the encoding criterion, what is the difference between the RS-232 standard and the Manchester encoding standard? Draw the waveform diagram to send the bit pattern O110110 according to: (i) RS-232 standard and (ii) Manchester encoding Determine the transmission delay, propagation delay and the total delay incurred to transmit data of size 2000 characters using the RS-232 standard. Assume the channel bandwidth is 40000 bits/sec and length is 2*106m. Assume the speed of the signal on the channel is 60% of the speed of light. 2) 3) 4) 5) Consider the word 'ANT" with the ASCII values of 'A, 'N' and T" being 65, 78 and 84 respective How would this word be transmitted if the transmission order a. b. c. d. Byte little-endian and bit big-endian Byte little-endian and bit little-endian Byte big-endian and bit big-endian Byte big-endian and bit little-endian 6) Consider a modulator-demodulator hardware that uses amplitude modulation to encode and decode every cycle of a carrier wave of amplitude A. Draw the waveform diagram to show a modulated carrier wave that is used to transmit the bit sequence O1100111. Assume you are encoding using 4 different amplitude levels. Show clearly, the bit pair you are encoding for each of the 4 amplitude levels. 7) Consider a modu lator-demodulator hardware that uses frequency modulation to encode and decode a carrier wave for every two cycles. Draw the waveform diagram to show a modulated carrier wave that is used to transmit the bit sequence 0 110. The indicates the channel is idle. Assume one bit is transferred per frequency level. Clearly indicate the number of cycles you are using to send bit I and 8) Assume two computers are using TDM to take turns in sending 512 bytes of data packets over a shared channel that operates at 56 Kbps. If the hardware takes 50msec after one computer stops it Use Code Division Multiplexing to transmit the data values 0 1 1 0 and 1 0 1 0 from two senders SI a. Show the resulting signal values when the two above two data signals are transmitted b. Show how the receiver for the data signals sent by SI and S2 are able to decode the data? sending before the other can begin, how long it takes for each computer to send 1 MB of a file? 9) and S2 respectively. The 2-bit Chip Sequence of SI and S2 are 0 1 and 1 1 respectively simultaneously