Page 52 - TechPluse_C7_Flipbook
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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 website. Websites are housed on Web servers. A
Web server is an Internet host computer that often store thousands of individual Web pages.
Copying a Web page onto a server is called publishing the Web page. This process is also called
as posting or uploading.
HOW THE WEB WORKS?
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.
USING WEB BROWSER
For several years, the Web remained a tool used by scientific researchers. But in
1993, developers at the National Center for Supercomputing Applications
(NCSA) created Mosaic, a point and click Web browser. A Web browser is a
software application designed to find hypertext documents on the Web and then
open the documents on the user’s computer. Commonly used web browsers are
Google Chrome, Internet Explorer, Opera, Mozilla Firefox, etc.
Launching Your Browser
You may need to connect to the Internet before launching the browser. Once you
have established a connection, launch your browser by clicking on the Firefox Web
Launching a
Browser icon at the top-left of the desktop. Web browser
USING URLs
You have learnt in previous class that every Web page has a unique address, called a Uniform
Resource Locator, or URL. URLs are the key to navigating the Web. When you provide a URL to
the browser, the browser finds that URL’s Web page and then transfers the Web page to your PC.
The content of the web page then appears in the Web browser window. You can specify a URL
in several ways, but two methods are commonly used:
Using Address Bar
Step 1 Type the URL in the browser’s Address bar.
Step 2 Press the Enter key from the keyboard.
Using Address Bar
Suppose, you want to visit the Website of Google. To do this, you
can type www.google.com in the Address bar and then press Enter key. The home page of
Google appears in the browser window.
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