Protocols → set of rules
ISO/OSI, TCP/IP → models of protocols
Before Internet → ARPANET In late ‘70 Internet evolved
Levels
- Physical (Transports data in physical world)
- Data Link (Translates data between various formats)
- Network (Routes the packets)
- Transport (Manages connections)
- Session
- Presentation
- Application
Some useful acronyms:
- All
- People
- Seems
- To
- Need
- Data
- Protocols
- Please
- Do
- Not
- Teach
- Students
- Pointless
- Acronyms