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Chapter Profile
7 Chapter Profile The Internet
World Wide Web
How does the Web Work?
Using Web Browser
Internet and Using URLs
E-Mail
E-mail Emoticons and Acronyms
As we know that the Internet is a computer network that connects hosts and 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) of the United States Department of Defense began connecting computers at different
universities and defense 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 communication protocol was established named
Transmission Control Protocol/Internet Protocol (TCP/IP). The TCP/IP allows computers
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 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.
Information on the Web is stored in the form of Web pages. A Web page is a hypertext document.
A collection of related web pages is called a website. Websites are housed on Web servers.
A Web server is an Internet host computer that often stores thousands of individual Web pages.
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