The TCP/IP protocol is a language that computers use to talk to each other on the Internet and in local networks. It works like this:

Imagine you want to send a letter to a distant friend. First, you write the letter, then you break it down into small pieces called ‘packets’. Each piece is associated with a destination address. 

Every computer connected to the Internet has a special address called an ‘IP address’, just like a home address. This IP address tells the Internet where that computer is located.

When you send packets to your friend, they travel across the Internet, through different computers and routers. These devices use the IP address for the packets to reach your friend’s computer.

Once the packets arrive at your friend’s computer, the TCP protocol checks that all the pieces have arrived correctly and in the right order. If any pieces are missing, the TCP protocol will request that they be sent again.

In summary, the TCP/IP protocol is like a postman who divides your letter into packets, sends them through the Internet and makes sure they all arrive safely and in the right order to the destination computer. This allows computers to communicate and share data reliably over the Internet.

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