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1) describe the terms bit rate and baud rate. Are they same, if not, describe the relationship between the two by taking a suitable ex data.

2) What is the objective of carrier signal in Modulation? Also describe the function of Modulator and demodulator.

3)(a) Why do we require error detection and correction methods. For given data, M:111000101, determine the CRC using polynomial, P:11011.

(b) What do you mean by multiplexing? Why and when it is needed. Describe in detail the different multiplexing techniques used for digital communication.

4)(a) What is switching techniques? prepare down the name of different switching techniques Which one is used in telephone system?

(b) prepare down the name of different kinds of transmission media used for data communications. Also expalin the use for each class of guided and unguided media.

5)(a) Compare and contrast the OSI and TCP/IP reference models in detail.

(b) What do you mean by NAT and why it is needed?

6) List in order the protocols which evolved from multiple access and describe the CSMA/CD in detail.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M99703

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