Question

- True to its name, computer networking technologies allow computers of many kinds to be connected to each other and to human users. What are some of the ways that computer networking (not just computers) has impacted business, government and society?

- What is the purpose of the OSI model?

- Why is layering in the model is important and what purpose does it achieve?

- How is the OSI model different from the TCP/IP model and which layers of the OSI model are subsumed into the application layer of the TCP/IP model?

Answer 1

Sol:

Computer networking has wide range of applications in almost every field . We can't point out any specific area that is free from the use of computer and networking. lets check how this impacted business, government and society .

1) Integration of business modules made easy

2) Easy communication between the central station and customer.

3) Server and client data exchange became easy

4) Government works became simple and less complex

5) Peoples can share the contents to each other through networking

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The purpose of the OSI model is nothing but giving an idea about the various functions and working of networking systems to the users.

other purpose includes,

* Layer wise functionalities organized

* Each layer having specific functions

* How the networking happening from systems to system is depicted in the model.

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Layering is very important why because it gives a clear idea about how the networking functions happening . Each layer has some functions to perform , hence the overall functions will be a integration of these small modules.

other functions includes,

* Step by step procedure of networking

* layering gives more reliability and convenience

* Networking need many protocols for working , layering makes easyly understanding by organizing protocols to each layer and its functinality.

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OSI model differ from TCP/IP model mainly because of the decrease in the layers . In more generally TCP/IP model has 4 layers but in OSI model it has 7 layers.

other diference includes ,

* OSI model following an approach of vertical but TCP/IP model follows horizondal approach

* In OSI more importance to the model then comes to the protocol , but in TCP/IP model primerly on protocols and to model

* TCP/IP model is convenient and better by comparing OSI model.

* TCP/IP model offers high reliability than OSI model

The session layer and presentation layer are the two layers in the OSI model that subsumed into the application layer of the TCP/IP model