What is OSI Model?

The OSI Model is like a team of friends who help messages travel from one place to another.

Imagine you're sending a letter to your best friend across town. You write the message, put it in an envelope, seal it with a sticker, and hand it to a postal worker. That postal worker takes the letter to the post office, where it gets packed into a bigger box with other letters, shipped on a truck, and finally delivered to your friend.

The OSI Model works like that, but for computers. It has seven layers, think of them as seven friends in a relay race, each doing their own job so the message can go from one computer to another without any mistakes.

• The first layer is like your hand, it helps send and receive the actual bits (tiny pieces of information).
• The second layer is like the envelope, it makes sure the message gets wrapped up properly.
• Higher layers are like the post office, truck drivers, and your friend, they help move the message along and make sure it’s delivered correctly.

Each layer only talks to its neighbor, just like friends passing a message in a game. This teamwork helps computers all around the world share information easily!