OSI Layers and Protocol

Application Layer DNS, DHCP, FTP, HTTP, TFTP, TELNET, SMTP

Presentation Layer Upper Layer POP, IMAP, ETC..&

Session Layer NETBIOS (Session Layer uses only)

Transport Layer TCP, UDP

Network Layer IP, ICMP, ARP, RARP

Data Link Layer HDLC, SDLC, FRAME RELAY

Physical Layer (No protocol is used here, it works with Ethernet or token ring)