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What is OSI Model?
First you should understand why we need to learn OSI layer.There is a doubt in your mind I know. So don’t worry . If you read entire article I will assure that you will gain thorough understanding of the OSI layer.
If you want to communicate two or more computers with each other .The OSI layer will help computers to communicate with them. Can we see the OSI layer ??? NO, this just a framework.The Open Systems Interconnection(OSI) model describes seven layers that computer systems use to communicate over a network. Each layer has its own set of protocols
7.Application layer
Web browsers and other internet connected apps such as skype outlook are used to communicate the user to the network..what service( email ,file transfer)we will do ,it will decide in this application layer, Application layer interacts with the user directly.
Ok, i think you get confused, let's see some example, typing a “Hello” message to a friend in WhatsApp. Where do you type ? using whatspp screen. This is application layer.
