====== ISO-OSI MODEL ======
==== Why use the model? ====

It is necessary to have a standardized model which allows for different devices with different protocols to communicate with each other. It would be very difficult to connect different networks if they didn't work of the same principles.

==== ISO-OSI model principles ====
  - Work on each layer can be done by manufacturers without affecting other layers.
  - Each layer performs a defined function, from start to finish.
  - Layers allows interconnectivity no matter how and what data is sent.

==== ISO-OSI model layers ====
  - [[network-layer_physical|The Physical layer]]
  - [[network-layer_datalink|The Data Link layer]]
  - [[network-layer_network|The Network layer]]
  - [[network-layer_transport|The Transport layer]]
  - [[network-layer_session|The Session layer]]
  - [[network-layer_presentation|The Presentation layer]]
  - [[network-layer_application|The Applicatiom layer]]