Having problems with your Gateway Essential 400 PC Desktop ?

Why we starting using OSI model

\015 I want a help for NCCeducation course\015

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He probably needs an answer to the topic question for his studies.

ANSWER: The reason we started using it was to enable network communication between the various networking hardware products of various producers without it mattering which one was produced by who and on what platform. This is possible because the OSI model is a standardisation (ISO 7498-1) which lists the various functions provided by different network protocols into layers on top of each other in a way that the layers above each other can only use functions provided by a sub-layer and can only provide functions for a superior layer. The model clearly specifys how one layer can interact with the other. (this by the way is what we call RFC -- Request for Comments) This way a software of the layer written by one producer could cooperate/communicate with the software of a layer written by a different producer even on two different platforms.

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