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1) prepare down the functions of OSI layers? Describe in detail.

2)a) Describe the kinds of line coding with neat and suitable diagrams.

b) describe about RS-232 interface in detail.

3) describe about the types of topologies in detail.

4) Describe about transmission media for data transmission in detail.

5)a)i) What do you mean by a protocol? prepare down the three key elements of a protocol.

ii) prepare down the difference between simplex, half duplex and full duplex communication With significant exs.

b)i) Sine wave complete one cycle in 25 microseconds. prepare down its frequency? Express the frequency in KHz.

ii) A digital signal has bit interval of 40 microseconds. What is the bit rate? Express the bit rate in Kbps.

6) prepare down the difference between protocol and a service interface? Describe in terms of a ISO seven layer model.

7) Why star topology is usually favoured?

8) Is there any relationship between transmission media and topology?

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M911214

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