TCP (Transmission Control Protocol) is like a postman who delivers letters to your friends.
When you want to send a letter to your friend, you put it in an envelope and write your friend’s address on it. The postman then takes the letter, reads the address, and delivers it to your friend’s mailbox.
TCP works the same way, but with data instead of letters. When you send data over the internet, it gets broken up into small pieces called packets. Each packet has an address that tells it where to go.
The packets are then sent through the internet like a postman delivering letters, with each router along the way checking the address to make sure it’s going in the right direction.
Once all the packets have arrived at their destination, TCP puts them back together in the right order, just like your friend would open all the letters you sent and put them in order.
TCP also makes sure that all the packets arrive safely, by asking for any missing ones to be sent again. This ensures that all your data arrives complete and in the right order, just like your friend receiving all your letters.
That’s why TCP is an important part of how the internet works, helping us send and receive data reliably and efficiently.