Have you ever think of that how you are able to video call your friend or surf anything on your web browser?
Today we’re going to know how does this all work and what is tech behind all of this. First we all want to know how did this all started and where the idea of the Internet comes from right?
so here is the basic information that how internet comes into the existance :
very first internet comes in 1969.
when U.S department of defence sponssored a project named ARPANET.
also in mid 80s a new high capacity network named NSFnet was created.
Now we know when internet came in existance, so we also want to know what the term internet means by defination?
Internet : a global network of computers that are connected to each other and can communicate with each other. (just like we call to eachother on phone).
Now the question is how does the internet works?
Before we go further on to this question we must know some terminology related to the internet.
Network: A network is a set of devices that are connected with a physical media link. In a network, two or more nodes are connected by a physical link or two or more networks are connected by one or more nodes. A network is a collection of devices connected to each other to allow the sharing of data.
TCP : Transmmision control protocol this is a comuncation standard which allows devices and application to exchange messages over a network.
IP address : this is a unique address of each device which connected over a internet.
Cue :(just like your home address)
Server : a computer or system that provides data, programs, resources, or services to other computers, known as clients, over a network.
Now we go further and try to understand that how Internet work behind the scene?
Imagine you're sending a letter to someone in another city. Your computer is like the sender, and the website you want to visit is the recipient. The process starts when you type a website's address in your browser and hit enter (like writing the recipient's address on the letter). This action creates an HTTP request.
Your computer uses a router and a switch, which act like the post office, to decide the best route to send your request. The request then reaches your ISP (Internet Service Provider), similar to how the local post office collects your letter and sends it to the central postal hub.
The ISP forwards your request to the internet, which works like a massive network of postal workers delivering packages. The internet uses protocols like TCP/IP, FTP, or HTTP to figure out the best way to deliver your request, just like postal codes help mail get to the right place.
Once your request reaches its destination (the website's server), the server prepares a "response" (like a reply letter) and sends it back. It follows the same path in reverse, eventually arriving at your computer.