Defination And Structure Of OSI Model - madhuchary/c3 GitHub Wiki

####Open Systems Interconnection model (OSI model)

• Is reference model/conceptual model for how applications can communicate over a network.
• At each layer, certain things happen to the data that prepare it for the next layer.

#####Structure

	Layers	Examples
	7.Application	HTTP, FTP, SMTP
Host	6.Presentation	HTML, CSS, GIF
layer	5.Session	RFC, SSL, SQL
	4.Transport	TCP, UDP
Media	3.Network	IPv4, IPv6, Apple Talk
layer	2.Data Link	MAC, IEEE 802.2
	1.Physical	Ethernet Physical Layer, USB, ISDN