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Understanding TCP/IP

TCP/IP stands for Transmission Control Protocol/Internet Protocol. Every computer on the Internet uses the TCP/IP method to transfer files. As the name indicates, it's actually two protocols. The earliest model was the Internet Protocol, developed in the days f ARPANET (the Advanced Research Projects Agency Network, the original Internet, formed in the 1960s) to send data in packets (self-contained units of information) from one computer network to another. The weakness of IP is its inability to deal with poor transmissions. If a packet gets garbled or interrupted, the receiving IP-based machine just tosses it. The TCP protocol makes sure that every packet is delivered to the receiving network in the same order it was sent. A kind of numbering system verifies that the packet received is identical to the one sent. Every network and every computer on the Internet uses TCP/IP to communicate.


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