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Lesson 2: The World Wide Web
Objectives
After completing this lesson, you will be able to:
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Define WWW and its relation to the Internet.
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Explain how Web addresses work.
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Explore Web sites by using a search engine.
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Explain how to perform transactions over the Web.
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Define browser plug-ins and explain their uses.
Introduction the World Wide Web
The World Wide Web (WWW or simply, the Web):
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Refers to the collection of information that is
accessible on the Internet.
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The information is in the form of text, pictures, and
sound.
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The Web is a very popular service on the Internet.
Introduction the World Wide Web (cont.)
Web and the Internet are technically two different
terms:
o The Internet connects multiple computers and
forms a network on which a computer can
communicate with another computer.
o The Web is a way of accessing and sharing
information over the Internet by using Web
browsers.
Web Components

Web browser is a software program that enables you
to view and interact with various resources on the
Web.
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Web page is a document on the Web. It is a formatted
text document that a Web browser can display.
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Web site is one or more Web pages that reside on a
single server.
Web Addresses
o Every Web site on the Web is stored on a computer
that is part of a vast network.
o To access a Web site, you need to access the
computer on which the Web site is stored.
o Each computer on the Web is identified by a unique
address, known as the Internet Protocol (IP) address.
o The IP address is a numeric address that specifies
the exact location of a computer on the Web.
Web Addresses (cont.)
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A Web site for a domain is accessed with the help of a
unique alphanumeric address known as the Web
address.
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The Web address is also known as the Uniform
Resource Locator (URL), which specifies the protocol
to be used and the exact location of the Web site.
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A protocol is a standard method of transferring data
between different computers.
Web Addresses (Cont.)
http://www.microsoft.com/learning/default.asp
Element
Description
http://
Indicates the protocol to be used to access a file.
www
Indicates that the Web site is on the World Wide
Web.
microsoft
Indicates the name of the Web site.
.com
Indicates the type of domain.
/learning/default.asp
Indicates the path of the document.
Examples of domain name suffixes.
Suffix
Description
.com
Indicates that the Web site is for a commercial organization.
.edu
Indicates that the Web site is for educational institutions, such as
schools, colleges, and universities.
.net
Indicates that the Web site is for a network-oriented organization or
for an ISP.
.org
Indicates that the Web site is for a nonprofit organization.
.info
Indicates that the Web site is informative in nature.
.museum
Indicates that the Web site is used for a museum or for an
individual of the museum profession.
Working with Internet Explorer
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4
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3
2
3
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Please follow these
steps to practice:
Open Microsoft Digital
Literacy site
Click on Internet
module.
Click on “Launch Elearning.
Click on the “Play”
button.
Follow steps on the left
screen.
E-Commerce
E-commerce refers to the business transactions made over
the Internet, such as buying and selling items online.
E-Commerce (cont.)
Example: Purchasing Museum Online Tickets
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Step 1: access the museum’s Web site.
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Step 2: create a new account.
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Step 3: select the date and the number of tickets you want
to purchase.
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Step 4: provide your credit card details along with the
shipping address.
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Step 4: record your transaction code that you can use for
any further queries related to this purchase.
Using Browser Plug-ins
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A Web page may contain content in the form of animation,
video, or audio files. To view these files, you need
additional programs known as plug-ins.
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Plug-ins provide added functions by allowing the Web
browser to access and run files that are included in Web
pages.
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Some popular plug-ins are available with most of the Web
browsers.
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Certain plug-ins that you need to install or update to be
able to view Web pages with new features and file formats.
Using Browser Plug-ins
Download Plug-Ins
1) In the Address bar, type http://www.msn.com, and
then click Go.
2) On the left column of the MSN home page, click
Video.
3) Click Download Microsoft Windows Media Player.
4) To download the plug-in, click Download Now twice.
5) Click Run.
6) Click Run.
7) Click I Accept.