Networking is the term used when people talk about connecting computers together so that they can share information or resources with each other.
OSI model is a logical model for how systems in the network should communicate to each other. All the model does is to break down all the components for communication and arrange them into layers.
Most of us consider OSI as a dominion for outlining a network or as a model which tells us how networking functions. But all OSI is 7 logical layers that allow you to think about a network and then figure out how to build that network or how to fix it.
To understand how all these work is much easier if you focus more on what individual is?
The layers from top to bottom are for what is closer to the end user. So, what the user is interacting with will be at the top, to the layer which is shooting the information out into the network itself.
So we will start the count from 7 not from 1. So, let’s get started. . . .