Tcpip Tutorial
# TCP/IP Tutorial
TCP/IP is the communication protocol of the Internet.
The TCP/IP communication protocol describes rules that computers must follow; only by adhering to these rules can computers communicate with each other.
**[Start Learning TCP/IP!](
TCP Protocol: [
## Your Browser and Server Are Both Using the TCP/IP Protocol
Browsers and servers use the TCP/IP protocol to connect to the Internet.
A browser uses the TCP/IP protocol to access a server, and the server uses the TCP/IP protocol to send HTML to the browser.
## Your E-Mail Uses the TCP/IP Protocol
Your email messages are also sent and received via the TCP/IP protocol.
## Internet Addresses Are Part of the TCP/IP Protocol
Internet addresses such as "42.120.45.233" are part of the TCP/IP protocol.
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