The OSI model is like a bunch of rules that both people agree to follow so they can understand each other. It’s like saying, “We’re going to use these words in this order so we can understand each other better.” There are 7 layers in the OSI model, each with its own set of rules. These rules help computers communicate with each other by breaking down the conversation into smaller, more manageable pieces.
TCP and UDP are like different languages that the computers can use to talk to each other. They’re both ways of sending information from one computer to another, but they work in different ways.
TCP is like having a long, detailed conversation where you make sure that the other person understands everything you’re saying. It’s like saying, “Let’s talk slowly and make sure we both understand each other.” With TCP, the computers check to make sure that all the information has been sent and received correctly before they move on to the next piece of the conversation.
UDP is like having a quick, simple conversation where you don’t worry too much about making sure everything is understood perfectly. It’s like saying, “Let’s just say what we need to say quickly and move on.” With UDP, the computers don’t check to make sure that all the information has been sent and received correctly. They just send the information and hope it gets there okay.
So, the OSI model, TCP and UDP are all different ways that computers can communicate with each other. Just like how people have different languages and ways of speaking, computers have different rules and protocols that they use to talk to each other.