While the differents layers of the OSI model are primarily conceptual and do not correspond to physical components. Alternativaly, they provide as easier way to conceptualize how data is transmitted between devices in a network. However, some aspects of the OSI model do have real world counterparts, such as the physical layer of the model which deals with the physical transmission of data over a communication channel, and includes the physical components that make up a network, such as cables, connectors, and network interface cards.
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