• OSI: Open Systems Interconnection

1. Layer 7 - Application
2. Layer 6 - Presentation
3. Layer 5 - Session
4. Layer 4 - Transport
5. Layer 3 - Network
6. Layer 2 - Data Link
7. Layer 1 - Physical

All People Seem To Need Data Processing.

References #

• https://www.freecodecamp.org/news/osi-model-networking-layers-explained-in-plain-english/
• Wikipedia - OSI model