1.5. Task 1.5: Applying the OSI Model

If you've ever sat through even a single hour of network training, you've probably had your fill of the ISO's Open Systems Interconnection (OSI) reference model. While such intolerance is understood and shared by many, the ISO and others had a stroke of genius when they decided to categorize information processing into a stack of interrelated steps known as layers. By simplifying the entire data communications process through a division of labor, these groups succeeded in opening the door to many who otherwise never would have been able to grasp the concept of networking in general.

This separation of functions, each often attributable to a single protocol or agreed-upon method of communication, has simplified ...

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