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1 ( a ) ( i ) State and explain the most common technique utilized for digitization ( Analog to 5 + 5 digital conversion

1
(a)(i) State and explain the most common technique utilized for digitization (Analog to
5+5
digital conversion) in computer networks? Mention clearly various processes and
theorems in brief involved in it with the help of block diagram?
(ii). Sketch NRZ-I and Differential Manchester encoding for given bit stream-
Show clearly bit boundaries and middle bit transitions if any for each case.
OR
(b)(i).Specify the merits and demerits of virtual circuit switching as compared to circuit
switching and datagram approach?
(ii).Suppose that the sender wants to send 4 frames each of 8 bits, where the frames
are 11001100,10101010,11110000 and 11000011. Calculate the Checksum at sender
side and mention the condition for error checking at the receiver.
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