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School/Analyse/OSI Model.md
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# OSI Model # OSI Model
The OSI Model is a layered protocol model. It was proposed by the International Organization for Standardization. The OSI Model is a layered protocol model. It was proposed by the International Organization for Standardization. The model can be used as a reference to understand how networks operate.
![[OSI-model.png]] ![[OSI-model.png]]
The model can be used as a reference to understand how networks operate. The model was created to have a sta The model was created to have a standard which hardware/software producers could use so that different products could work with each other.
For example, before this model was introduced, hardware from company A could not work together with hardware of company B because the protocols and techniques used were completely different.
As you can see the model has 7 layers. Each layer has their own responsibility. As you can see the model has 7 layers. Each layer has their own responsibility.
Note: We dont actually "use" the OSI model, we mostly use the pTCP/IP]]
## Physical Layer ## Physical Layer
## Data Link Layer ## Data Link Layer
## Network Layer ## Network Layer