The TCP/IP Model
The TCP/IP model was developed by the U.S. Department of Defense (DoD) and originated from the need of a network that could survive any conditions, including a nuclear war. After it was released to the public, in a few years the TCP/IP model became the most popular networking model and it is now the core of the Internet.
In a world where we have data transmitted over wires, microwaves, satellite links, and optical fiber, there is the need to transmit data reliably over any media and under any circumstances. Let's see how the TCP/IP model can do that.
First of all, the TCP/IP model consists of four layers as in the following figure:
So, the layers of the TCP/IP model are: Application, Transport, Internet, and Network Access.
Even if ...
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