Foundation Networks  IT Assignment Help
Assignment Task:

 

1. Data is to be transmitted consisting of the bits sequence

- 1 1 1 0 1 1 1 0 0 0 1.

The sequence will be encoded using a cyclic code (15, 11) with a generator polynomial x . What will be the four check bits to 4 + x 2 + x + 1 be added prior to transmission? What will be the remainder if the encoded data that was transmitted encountered an error in bit 6.

Show your solutions as part of your answers.

2. Discuss the three Automatic Repeat Request techniques used in retransmitting data over an unreliable communication network. Draw the corresponding diagrams of each technique

3. The following data bits

- 1 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 1 1 1 are to be coded digitally onto a transmission medium using NRZ-L, NRZ-I, and RZ techniques. Draw the corresponding diagram for each of the three line coding techniques. Using your research skills, draw a diagram of the data bits digitally transmitted using Differential Manchester. Giving one reason, explain why line coding is used for digital transmission.

 

Foundation Networks  IT Assignment Help

5. Explain the concept of encapsulation by using the structure of the OSI Reference Model.

6. Explain the different transmission impairments in a data communication network. Give an example of each transmission impairment.

7. Compare and contrast the three basic network topologies. You are setting up a network which is described as follows:

]a. There are 16 workstations

b. The 16 workstations are divided into 4 groups of 4.

c. The workstations within each group must be fully connected to each other

d. One workstation in each group is connected to a central switch, to which the server is attached. Draw the topology of the network described in a to d above.

 

Foundation Networks  IT Assignment Help

 

Foundation Networks  IT Assignment Help

What will be codeword transmitted if the data bits are 1100? Show how you used the above equations in generating the parity bits. Derive the generator and check matrix which can be used to encode the four data bits. Using the derived generator matrix, what will the codeword be, for the data bits 1001? Show how you used the generator matrix.

10. Compare and contrast the following: a. serial communication vs. parallel communication b. synchronous transmission vs. asynchronous transmission.

 

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  • Posted on : November 07th, 2018

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