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1)(a) prepare down the difference between Analog and Digital Communication by providing appropriate exs illustrating in which conditions Analog is better and in which condition Digital is better.

(b) Design a comparison between FDM, TDM and STDM Multiplexing Techniques.

2)(a) Compute the hamming distance for the following codes:

d(10000,0I000)d(0000,0000)

d(10000,0I000)d(0000,0000)

(b) We require to send 265 kbps over a noiseless channel with bandwidth of 20 kHz. How many signal levels do we require?

(c) We have a channel with a 1-MHz bandwidth. SNR for this channel is 63. What are the suitable bit rate and signal level?

3)(a) A system has the n-layer protocol hierarchy. Applications generate messages of length M bytes. At each of layer, the h-byte header is added. What fraction of network bandwidth is filled with the headers?

(b) Design a comparison between circuit, packet and message switching techniques.

4)(a) Describe in what methods OSI and-TCP/IP reference models are same and where they differ.

(b) prepare a detailed note on Unguided Media.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M99723

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