➤ The Internet is a huge collection of computers connected in a communications network.
➤ The Transmission Control Protocol/Internet Protocol (TCP/IP) became the standard for computer
network connections in 1982.
➤ Rather than connecting every computer on the Internet directly to every other computer on the
Internet, normally the individual computers in an organization are connected to each other in a local
network. One node on this local network is physically connected to the Internet.
➤ So, the Internet is actually a network of networks, rather than a network of computers.
➤ Obviously, all devices connected to the Internet must be uniquely identifiable.