Automatic Repeat Request Technique - Foundation Networks - IT Computer Science Assignment Help

Assignment Task :

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

2. Discuss how an Automatic Repeat Request (ARQ) technique is used in retransmitting data over unreliable communication network. Select one ARQ techniques then draw and describe its corresponding diagram.
 

3. The following data bits,

1 1 0 1 0 0 0 1 1 1 0 0 1 0 1 1 0 0 1 0 1

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

By using Open Systems Interconnection Reference Model, explain how encapsulation is performed in data communication.

4. Select and describe, two among the three transmission impairments that can be introduced by the transmission medium. Give an example for each transmission impairments that you have selected.

5. Perform the following tasks (a-d):
a. Draw the links between five (5) computers connected using full mesh topology
b. Draw another diagram showing five (5) computers connected in star topology.
c. Give two reasons, why star topology is preferred over mesh topology.
d. Give two disadvantages of using star topology over mesh topology.

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