OSI 7-Layer Model
The OSI (Open Systems Interconnection) model is a framework that describes the functions and interactions of computer systems in a network.
- Local Networking: Ethernet (start / end point of data moving across internet)
- Routing: Moving data across multiple networks
- Segmenting, Ports, and Sessions
- Applications
- Physical
- Data Link
- Network
- Transport
- Session
- Presentation
- Application ^ These 7 layers are the "Networking Stack". 1-3 are Media Layers, 4-7 are Host Layers