ch02 - CHAPTER 2 THE INTERNET AND THE WORLD WIDE WEB How...

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1 CHAPTER 2 THE INTERNET AND THE WORLD WIDE WEB How the Internet Works The Internet is a global, interconnected computer network in which every computer connected to it can exchange data with any other connected computer. The Internet is best thought of as the overarching network of networks. In this network of networks, every connected computer can directly exchange data with any other computer on the network. The Internet is also referred to as cyberspace —territory that isn't an actual, physical place and that is only accessible with computers. The networks that make up the Internet are maintained by large organizations, such as corporations and universities, as well as by service providers that sell Internet subscriptions to the public. The Internet does more than merely allow any one of millions of computers to exchange data with any other. It enables any connected computer to operate a remote computer by sending commands through the network. One key to the Internet's success is called interoperability , the ability to work with a computer even if it is a different brand and model. Accessing the Internet and Web Users access the Internet by way of a public or private Internet Service Provider (ISP). Public providers include libraries and schools; private providers are those who provide access for a fee. You can connect to your ISP by way of a telephone modem, a Digital Service Line (DSL) connection, a cable modem, a satellite connection, or a network connection (schools and businesses that maintain constant access to the Internet usually have such connections). c The Internet can be accessed in the following ways: h Dial-up access with Point-to-Point Protocol (PPP) h Digital Subscriber Line (DSL) h Cable and satellite access h LAN access
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2 For accessing the Internet, you will need: A computer with an operating system, such as Windows, MAC OS, or UNIX, that supports Internet protocols Communications equipment such as a modem, ISDN adapter, or Ethernet card An Internet service provider (ISP) Web browser software such as Internet Explorer or Netscape Navigator WWW: The World Wide Web is a global hypertext system that contains billions of documents and uses the Internet as its transport mechanism. The Web uses the Internet for its existence, but it’s a separate entity. The Internet is the physical connection of millions of networks, whereas the Web consists of hypertext embedded on Web pages that are hosted on Web sites . The Internet and Web: What’s the Difference? The Internet is the physical connection of millions of networks The Web uses the Internet for its existence The Web consists of hypertext embedded on Web pages that are hosted on Web sites Hypertext is a method of preparing and publishing text that is ideally suited to use with a computer. With hypertext, the reader determines the sequence of the information—the order in which it is read. In hypertext, related information is referenced by means of links instead of
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ch02 - CHAPTER 2 THE INTERNET AND THE WORLD WIDE WEB How...

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