Layers of Network Communications

The OSI model is used to define the functions of networking hardware/software, regardless of equipment, vendor or application. The OSI model is a stack of seven layers. Layers one through three are known as the media layers. They define hardware orientation such as routing, switching and cable specifications. Layers four through seven are known as the host layers. They define software that implements network services.

Each of the OSI layers has a broad set of protocols and standards. It is important for techs to know and understand the inner workings of these layers if they are to be serious about working with, and troubleshooting networks, the equipment and services on those networks.

More Info: https://globallytechnews.blogspot.com/2020/03/7-layers-of-network-communications.html
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