Although the name implies that TCP/IP consists of only the
Transmission Control Protocol and the
Internet Protocol, TCP/IP contains many different
protocols that all work together to make TCP/IP
networks function.
Examples of non-application protocols (see
OSI 7 Layer Model):
ICMP (
Internet Control Message
Protocol)
UDP (User
Datagram Protocol)
ARP (
Address Resolution Protocol)
IGMP (Internet
Group Management Protocol)
And the
Application Layer protocols we all know and love:
HTTP (
Hypertext transfer Protocol)
SNMP (Simple
Network Management Protocol)
FTP (
File Transfer Protocol)
TFTP (
Trivial File Transfer Protocol)
SMTP (Simple
Mail Transfer Protocol)
Telnet
NNTP (Network
News Transfer Protocol)
Those including
TCP and
IP form the 13 principle protocols in the TCP/IP suite.