TCP IP

OSI TCP/IP - Comes from DoD (Department of Defense)
1 Physical Please Network Never
2 Data Link Do Network
3 Network Not Internet Ingest
4 Transport Throw Transport Toxic
5 Session Sausage Application Apples
6 Presentation Pizza Application
7 Application Away Application

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Requests for comments (RFC's)
The TCP/IP Protocol is an open Protocol
Contributors from the community submit documents to be reviewed and possibly approved to become part of the standard
An old RFC is never updated
If changes are required, a new RFC is created and assigned a new number
More info found at - rfc-editor.org