Chapter two: The Internet and World Wide Web

Page 75-90: The World Wide Web
The World Wide Web
The World Wide Web (WWW), or Web, consists of a worldwide collection of electronic documents. Each electric document on the Web is called a Web page, which can contain text, graphics, audio, and video. A Website is a collection of related Web page and associated items, such as documents and pictures, stored on a Web sever. A Web sever is a computer that delivers requested Web page
Browsing the Web
A web browser, or browser, is application software that allows users to access and view Web pages. The more widely used Web browsers for personal computers are Internet Explorer, Firefox, Opera, and Safari. The more common usage of the term, home page refers to the first web page that a Web site displays. Downloading is the process of a computer receiving information, such as a Web page, from a server on the Internet.
Web address
A Web page has a unique address, called a URL (Uniform Resource Locator) or Web address. A Web address consists of a protocol, domain name, and sometimes he path to a specific Web page location on a Web page.
Navigating Web pages
Most Web pages contain hypertext or hypermedia links. A link, short for hyperlink, is a built-in connection to another related Web page or part of a Web page. Text links may be underlined and/or display in a color different from other text on the Web page. Pointing to, or positioning the pointer on, a link on the screen typically changes the shape of the pointer to a small hand with a pointing index finger.
Searching for information on the Web
The Web is a global resource of information. Two types of search tools are search engines and subject directories. A search engines is a program that finds Web sites, Web pages, images, videos, news, and other information related to a specific topic. Search engines require that you enter a word or phrase, called search text or keyword, that describe the item you want to find. A subject directory classifies Web pages in an organized set of categories, such as sports or shopping, and related subcategories. A subject directory provides categorized list of links arranged by subject. Twelve types of Web sites are portal, news, informational, business/marketing, educational, entertainment, advocacy, blog, wiki, online social network, content aggregator, and personal.