In other words, hardware features, quirks, and/or limitations will ultimately impact the type of networking library required and/or what modifications must be implemented in a particular networking stack to support this hardware. Thus, it is important for embedded developers to understand the differences in the hardware, in order to understand the implementation of a networking stack on which these various technologies reside. However, the underlying networking hardware available today is often quite different in terms of how it works. Networking protocols residing at the higher layers of the OSI model view lower software layers that execute over different physical layer hardware as transparent.
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