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Q1. Consider the five messages given by the probabilities 1/2, 1/4, 1/8, 1/16, 1/16.

a) Compute H.

b) Utilize the Shannon-Fanno algorithm to build up an efficient code and for that code, compute the average no. of bits or message. Compare and contrast it with H.

Q2. Place the given concepts to correct layers of ISO-OSI reference model and validate your answer:

a) Forming a modem connection
b) Distributed document management
c) Error detection
d) Routing

Q3. What do you mean by High Level Data Link Control Protocol? Describe its significance in the data communication. Illustrate the various types of frames? Describe in brief.

Q4. Consider building a CSMA/CD network running at 1 Gbps over a 1-km cable with no repeaters. Signal speed in the cable is 200,000km/sec. Illustrate the minimum frame size?

Q5. Compare and contrast the X.25 and TCP/IP. Illustrate the principal strengths and weaknesses of all the protocols?

Q6. A computer on 6-Mbps network is regulated through a token bucket. Token bucket is filled at a rate of 1 Mbps. This is initially filled to a capacity with 8 megabits. describe how long can the computer transmit at full 6 Mbps?

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M911072

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