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OSI Referenzmodell
| Schicht | Funktion | |
|---|---|---|
| 7. Application | Die Anwendungsschicht ermöglicht die End-to-End-Konnektivität zwischen Personen im menschlichen Netzwerk mithilfe von Datennetzwerken. | |
| 6. Presentation | The presentation layer provides for common representation of the data transferred between application layer services. | |
| 5. Session | The session layer provides services to the presentation layer to organize its dialogue and to manage data exchange. | |
| 4. Transport | The transport layer defines services to segment, transfer, and reassemble the data for individual communications between the end devices. | |
| 3. Network | The network layer provides services to exchange the individual pieces of data over the network between identified end devices. | |
| 2. Data Link | The data link layer protocol describes methods for exchanging data frames between devices over a common medium. | |
| 1. Physical | The physical layer protocol describes the mechanical, electrical, functional, and procedural means to activate, maintain, and de-activate physical connections for bit transmission to and from a network device. | |