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1 What is the Web?
The World Wide Web is a collection of electronic documents that are linked together like a spider web.
These documents are stored on computers called servers located around the world.
The Web has evolved into a global electronic publishing medium and increasingly, a medium for conducting electronic commerce.
What is the Web made of?
Your personal computer (PC)
Web browser software to access the Web
A connection to an Internet service provider (ISP)
Servers to host the data
Routers and switches to direct the flow of data
How the Web works
Web pages are stored on web servers located around the globe.
Entering the (Uniform Resource Locator) URL of a web page in your web browser or clicking a link sends a request to the server that hosts the page.
The server sends the web page to your computer and your web browser displays it on your screen.
Web Pages
A web page (such as the one you are looking at now) is an electronic document written in a computer language called HTML (Hypertext Markup Language).
Web pages can contain text, graphics, video, animation, and sound, as well as interactive features, such as data entry forms.
Each page has a unique address known as a URL (Uniform Resource Locator), which identifies its location on the server.
Web pages usually contain hyperlinks to other web pages. Hyperlinks are text and images that reference the URLs of other web pages.
Websites
A website is one or more web pages that relate to a common theme, such as a person, business, organization, or a subject, such as sports.
The first page is called the home page, which acts like an index, indicating the content on the site.
From the home page, you can click hyperlinks to access other web pages.
Navigating the Web
There are three main ways to move between web pages or websites:
q Clicking a text hyperlink
q Clicking a hyperlinked graphic image, such as a button, photograph, or drawing.
q Typing the URL of a web page in the location box (also known as the address field) of your web browser and the pressing the Enter or Return key.
Source: learnthenet.com
