Solve All the questions

I Describe the TCP/IP protocol architecture. Compare it with the ISO/OSI architecture. [3 marks] | A channel has a frequency range between 4 KHz and 12 KHz. The SNR in this channel is 32 dB. Find the channel capacity of this channel. [2 marks] III A digitized TV picture is to be transmitted from a source that uses a matrix of 480 X 500 pixels, where each pixel can take on one of 128 intensity values. Assume that 30 pictures are sent per second. Find the bit rate of this source. [2 marks] IV A binary sequence 0100101011 is transmitted over a noisy channel. The received waveform is shown in figure below. It contains a single error. Locate the position of this error and draw the corrected waveform. [1 mark] 6 10 + V For a bit stream 0 1 0 1 0 1 0 1, sketch the waveforms for (1) NRZI (ii) Manchester (ii) Differential Manchester (iv) Pseudo ternary te: (1) For NRZ-I and differential Manchester, assume that the signal level for the previous bit at the start is positive () For pseudotemary, assume that the most recent preceding 'O' bit has a negative voltage. [2 marks]