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CS601 Assignment 1 Solution Spring 2019 with Step by Step Guideline.

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Solution of CS601 Assignment No 1 2019 Data Communications

Steps invloved to solve this assignments

Question-1  Suppose ElecTech is a multinational electronics company which has branches in different countries. Recently it has decided to open its new branch in Pakistan. In the new branch, the company wants to deploy computer networks for its different departments each having 13 computers. Following are key requirements for deploying the computer networks:

1. Finance department wants to use fast speed and highly secure network without involving any intermediate device in place.
2. HR department wants to use centrally managed network.
3. Admin department requires connecting all computers in a linear fashion.
4. Finance, HR and Admin departments want to connect their networks with each other in such a way that the data transmission among these departments should be carried through some Token passing mechanism.

Considering the above mentioned scenario and requirements, you are required to fill the following table by mentioning the most suitable topology and number of links required against each requirement:

Requirements Most Suitable Topology Requirements Most Suitable Topology No. of links required


Reference See the Page 31-34 (please check it yourself)

formulas tu calculate links for topology;

Here N = number of computers connected on the network

For Mesh topology: Links Calculation formula n(n-1)/2 = 13(13-1)/2 =78
Links required for ring topology = n = 13
Links required for star topology = n = 13
Links required for Bustopology = n-1 = 12

Requirements Most Suitable Topology Requirements Most Suitable Topology No. of links required
1Mesh Topology78
2Star Topology13
3Bus Topology12
4Tree Topology13

Question-2  Following table contains some communication scenarios. You are required to mention the suitable Transmission mode against each scenario:


Reference See the Page 31-34

Links Calculation formula n(n-1)/2

N = number of computers connected on the network

Communication Scenarios Transmission Mode
Ali is talking to his friend on video call over Skype.Full Duplex Mode
Aslam is typing a letter through Keyboard.Simplex Mode
Ahmad is listing news on radio. Simplex Mode
Captain is communicating with soldier using walkie-talkie. Half Duplex Mode

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