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As we know that the Internet is a computer network that connects hosts and end systems
throughout the world. In this chapter, we will learn about the Internet and e-mail service
of the Internet in detail.
The Internet
The seed of the Internet was planted in 1969 when
the Advanced Research Projects Agency (ARPA) Migratory birds navigate with
magnetic fields just as the
of the United States Department of Defense began
Internet routes data through
connecting computers at different universities
different networks.
and defence contractors. The resulting network
was called Advanced Research Projects Agency
Network (ARPANET).
In the beginning, ARPANET was a large network serving only a handful of users, but it
expanded rapidly. Initially, the network included four primary host computers. The Internet
acts as a carrier for several different services, each with its own distinct features and
purposes. The most commonly used Internet services are: World Wide Web, electronic
mail, news, file transfer protocol, chat, instant messaging, online services and peer-to-peer
services. January 1, 1983 is considered the official birthday of the Internet. Before this, the
computer networks did not have a standard way to communicate with each other. A new
communications protocol was established named Transmission Control Protocol/Internet
Protocol (TCP/IP). The TCP/IP allows computers to be connected to different networks
communicate with each other.
World Wide Web
The World Wide Web (WWW) is a large information system where you can surf and get
information. It consists of several public and private websites, which may be interlinked
and accessible over the Internet worldwide. WWW is also known as the Web. Many people
believe that the World Wide Web and the Internet are the same thing, but this is not
correct. In fact, these are two different things. The Web is a service (a system for accessing
information) that is supported by the Internet, a system of interconnected networks.
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