Layers
- Application
- Transmission
- Internet/Network
- Link
Layering Concept
- Functional components
- Knows how to communicate below and above layering
- Sequential communication
● Modularity
● Well defined service
● ReUse
● Separation of concern
● Continuous Improvement
● Peer to Peer communication - IP talks to dest IP layer
Encapsulation
- Layer N has payload of N-1 layer
- HTTP payload in TCP which is in IP which all in wifi Frame