How the data exchanged in the Internet?

The data in the Internet is exchanged using TCP/IP protocols. TCP stands for Transport Control Protocol and IP stands for Internet Protocol.

There are two versions of IP protocols out there. IPv4 and IPv6. IP protocols assigns addresses.

IPv4 is older than IPv6. IPv4 protocol was replaced by IPv6 because of exhaustion of IP addresses. It is possible to have about 4 billion of IP addresses with IPv4. It looks like a lot, but in reality it is not.

TCP protocol defines the rules of how the connection must be established and data exchange happens.

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