Page 47 - 2616_V iCode_C-5
P. 47
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.
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. Copying a
Web page onto a server is called publishing the Web page.
This process is also called posting or uploading.
How Does the Web Work?
Web documents can be linked together because they are created in a format known
as hypertext. Hypertext system provides an easy way to manage large collections
of data, which can include text files, pictures, sounds, movies and more. To support
hypertext documents, the Web uses a special protocol called the Hypertext Transfer
Protocol (HTTP). The language allows a document’s author to embed hypertext links,
also called hyperlinks or just links, in the document. HTTP and hypertext links are the
foundations of the World Wide Web.
Internet and E-mail 45

