OSI Network Model
| OSI model |
|---|
| 7. Application layer |
|
| 6. Presentation layer |
|
| 5. Session layer |
|
| 4. Transport layer |
|
| 3. Network layer |
|
| 2. Data link layer |
|
| 1. Physical layer |
|
The Open Systems Interconnection model (OSI model) is a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a way of sub-dividing a communications system into smaller parts called layers. A layer is a collection of similar functions that provide services to the layer above it and receives services from the layer below it. On each layer, an instance provides services to the instances at the layer above and requests service from the layer below.
Read more about this topic: Network Architecture
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