Network Starter Pack - 3 - Network - Part 1
This lesson series will step through the OSI 7-Layer Networking Model
- Physical
- Data Link
- Network
- Transport
- Session
- Presentation
- Application
https://en.wikipedia.org/wiki/OSI_model
The network layer adds the ability for cross-network addressing (IP Addresses). It allows packets to be routed across different layer 2 networks, via L2 Frame encapsulation and forwarding decisions using routes and route tables. Its Layer 3 which allows the internet to function.