OSI Network Layer

7 Layers OSI Model

OSI (Open Systems Interconnection) Network Layer
Open Systems Interconnection (OSI)Model was developed and defined by the International Standards Organization (ISO). This model was created to define functional communications system in terms of abstraction layers. This reference model is widely used by equipment manufacturers to assure their products inter-operate with products from other vendors.

There are 7 layers all together for this OSI network layer which are listed below ordering from top to lower layer:

• Layer 7 Application
• Layer 6 Presentation
• Layer 5 Session
• Layer 4 Transport
• Layer 3 Network
• Layer 2 Data Link
• Layer 1 Physical

Below is the video to show you in more detail about this OSI Network Model . But, If you prefer reading rather than watching, please visit http://en.wikipedia.org/wiki/OSI_model.

Posted in: Network Layer, OSI, OSI Network Layer