Copyright Goodheart-Willcox Co., Inc. Chapter 14 Internet and the World Wide Web 569 Uniform Resource Locator A uniform resource locator (URL) is an address that points to a specifi c document or other resource on a computer network. Many people call this a web address, but while all web addresses are URLs, a URL is not necessarily a web address. Each web page on the World Wide Web has a URL, and the use of URLs is another foundation of the web. It was Berners-Lee’s group that defi ned the URL and made each document in a WWW folder on any server discoverable. There are several parts to a URL. Consider this URL: http://www.internetsociety.org/deploy360/wp-content/ uploads/2014/10/IPv6-Fact-Sheet-English-v1.pdf Beginning with the protocol, a URL provides the path to the domain, through the servers’ folders, to the location of a specifi c document. Figure 14-6 explains the elements of this URL. The addresses in a URL may be absolute or relative. An absolute address contains all the information to locate the resource no matter from where the search begins. Think about a house address, such as: 123 Main Street Anytown, MD 20010 The mailing address contains not only the street address, but the city, state, and ZIP code. This allows a document to be mailed to a specifi c Hypertext Hyperlink Description Goodheart-Willcox Publisher Figure 14-5. Hypertext contains a hyperlink, which is the data needed to navigate to another resource.
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