OSI Layer 7

Layers in OSI	Function	TCP/IP protocol family
Application Layer	File transmission, email, file service, virtual terminal	TFTP, HTTP, SNMP, FTP, SMTP, DNS, Rip, Telnet
Presentation Layer	Data formatting, code conversion, and Data Encryption	No agreement
Session Layer	Release or establish contact with other contacts	No agreement
Transport Layer	Provides end-to-end Interfaces	TCP, UDP
Network Layer	Select a route for a data packet	IP, ICMP, OSPF, BGP, IGMP, ARP, RARP
Data Link Layer	Transmitted frame with address and Error Detection Function	Slip, cslip, PPP, MTU
Physical Layer	Transmit data on physical media in the form of binary data	Iso2110, IEEE802. 802.2