What is TCP/IP?

What is TCP/IP?

From: http://www.iplocation.net/tools/tcp-ip.php

 

TCP/IP, Transmission ControlProtocol/InternetProtocol, is a suite of communications protocolsused to interconnect network devices on the Internet. TCP/IPimplements layers of protocol stacks, and each layer provides awell-defined network services to the upper layer protocol. TCP andIP are the two protocols used by TCP/IP, as well as the (higher)application, (lower) data link and (lower) physical layerprotocols.

LayerProtocols5. ApplicationDNS, FTP, HTTP, IMAP, POP3, SMTP, SSH, Telnet, SSL, ...4. TransportTCP, UDP, ...3. NetworkIP (IPv4, IPv6), ICMP, ARP, ...2. Data Link802.3 (Ethernet), 802.11 (Wi-Fi), PPP, ...1. PhysicalEthernet (NIC), Wireless (NIC), Cat 5/RJ-45, ...