OSI

Layer	Typical Use	Protocols
Applic­ation	End User Layer	HTTP, FTP, SSH, DNS
Presen­tation	Syntax Layer	SSL, SSH, IMAP, MPEG, JPEG
Session	Sync & Send Layer	APIs, Sockets
Transport	End-to-end Connec­tions	TCP, UDP
Network	Packets	IP, ICMP, IPSec, IGMP
Data Link	Frames	Ethernet, PPP, Switch
Physical	Physical Structure	Fiber, Access Points, Copper Cabling