OSI Model - Reference graphic / What do you guys think? Anything to edit/remove/add?
In case anyone's a CS student in need of a pneumonic to remember the OSI layers, a professor gave me this one and it's stuck with me for years:
(From top to bottom) All People Seem To Need Data Processing.
All people say they never download porn
https://en.wikipedia.org/wiki/OSI_model
The Open Systems Interconnection model (OSI model) is a conceptual model that 'provides a common basis for the coordination of [ISO] standards development for the purpose of systems interconnection'.[2] In the OSI reference model, the communications between a computing system are split into
seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.[3]
The Internet protocol suite has a separate model, the layers of which are mentioned in RFC 1122 and RFC 1123.
That model combines the physical and data link layers of the OSI model into a single link layer,
and has a single application layer for all protocols above the transport layer, as opposed to the separate application, presentation and session layers of the OSI model.
Physical, Data Link, Network, Transport, Session, Presentation, and Application. 这样子的话，变成了四层。