1. The Internet and World Wide Web
Lesson 2: The World Wide Web

2. Introducing the World Wide Web
World Wide Web (WWW): collection of information that is accessible on the Internet.
Web servers: computers where information from the Internet is stored

3. Introducing the Internet
Web browser: software program that enables you to view and interact with various resources on the Web.
Example: Microsoft® Internet Explorer
Web page: a document on the Web. It is a formatted text document that a Web browser can display.
Web site: A Web site is one or more Web pages that reside on a single server.

4. Web Addresses
Internet Protocol (IP) address: a numeric address that specifies the exact location of a computer on the Web.
Example:
Uniform Resource Locator (URL): web address for a web site:

5. Parts of a URL Element Description http://
Protocol used to access a file
www
Indicates the web site is on the World Wide Web
Microsoft
Website name
.com
Type of domain
/learning/default.asp
Document path

6. Domain Types Suffix Description .com Commercial organization .edu
Educational institutions
.net
Network-oriented organization
.org
non-profit organization
.info
Informative websites
.gov
Government websites
.museum
Used for museums

7. Evaluating a Web Site Include Reliable Content
A good Web site should state the various sources, such as other Web sites, books, or names of experts, for the content that is displayed on the Web site.
Answer Your Questions
The Web site should answer your questions by giving you valid and specific information.

8. Evaluating a Web Site Include content by authors with credentials
The people who have written the content that is displayed on the Web site should preferably be writers with reliable credentials.
Include current content
The Web site should be well organized to help you easily navigate within the Web site. All the links in the Web site should be working, and the content on the Web site should be regularly updated.

9. E-Commerce
E-Commerce: business transactions made over the Internet, such as buying and selling items online.
E-Commerce also includes online stock trading that gives you an opportunity to buy and sell shares in the stock market.
A user can also check their bank account status or insurance details online.

10. Using Plug-ins
Plug-ins provide added functions by allowing the Web browser to access and run files that are included in Web pages
Examples
Adobe Flash Player
QuickTime