| OSI Model | ||||
|---|---|---|---|---|
| Data unit | Layer | Function | ||
| Host layers | Data | 7. Application | Network process to application | |
| 6. Presentation | Data representation and encryption | |||
| 5. Session | Interhost communication | |||
| Segment | 4. Transport | End-to-end connections and reliability | ||
| Media layers | Packet | 3. Network | Path determination and logical addressing | |
| Frame | 2. Data Link | Physical addressing | ||
| Bit | 1. Physical | Media, signal and binary transmission | ||
Tuesday, November 17, 2009
The OSI Model
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