The OSI Model

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Unit: 1 Lesson: 2

the International Organization for Standardization came together one day

The official documentation for the OSI model can be found here.

The OSI model splits the hardware and software functions that enable data transmission between computer systems into seven basic layers:

• physical
• datalink
• network
• transport
• session, presentation, and application

Not everyone implements the OSI model explicitly in their applications, but there are always functions that definitely play the role somewhat defined in the OSI model somewhere there.

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