When we open a browser and type "www.example.com" it establishes the connection as you being in the browser as client and example.com's computer stored somewhere on the internet. When we say the internet connects everything, this is one example. Here, you as a client want to take service from the server example.com. How is the connection established? The connection is established with the help of HTTP protocol. Now let's dig inside HTTP. HTTP is a protocol for transferring Hypertext data from one computer to another on the World Wide Web basically the internet. Let's understand it more with the above example. When you go to example.com. First, the connection is established between a server and you as a client to communicate a socket is established for request and response. Your request to view the homepage is then taken as a request after connection establishment. And the server is designed in such a way that, what should we do when a particular request comes. He...