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
Famous quotes containing the words network and/or model:
“Parents need all the help they can get. The strongest as well as the most fragile family requires a vital network of social supports.”
—Bernice Weissbourd (20th century)
“Your home is regarded as a model home, your life as a model life. But all this splendor, and you along with it ... it’s just as though it were built upon a shifting quagmire. A moment may come, a word can be spoken, and both you and all this splendor will collapse.”
—Henrik Ibsen (1828–1906)