1. Internet and Web
Lecture 6

2. • Discuss origins of internet and web
• How to access web
• Discuss internet communications
• Describe search engines
• Discuss electronic commerce
• Web utilities

3. The Internet
• Referred to as the information
superhighway that connects you to
millions of other people and organisations
• Is used for
– Communication
– Shopping
– Searching
– Entertainment
– Education

4. The internet
• Launched in 1969
– United States funded a project named
Advanced Research Project Agency Network
(ARPANET)
• The Web also known as WWW was
launched in 1992 at Center for European
Nuclear Research in Switzerland

5. Internet and Web
• Internet is the physical network made of
wires and satellites
• The Worldwide web is the multimedia
interface to resources available on the
internet

6. Internet Access
• Service providers
– National level
– Regional level
– International level
• Browsers
• Uniform Resource Locators (URLs)
– Protocol
– Domain name
– Domain code

7. Web sites
• Hyper Text Markup Language (HTML)
• Hyperlinks
• Web Servers

8. Communication
• E-mail or Electronic Mail
– Address
– Subject
– Message
– Attachments
• Precautions
• Discussion groups
– Twitter
– Chat groups
– Instant messaging

9. Search tools
• Search Engines
– Keyword search
– Directory search
• Metasearch engines
• Specialised search engines

10. E Commerce
• Business to consumer (B2C)
– Web store fronts
– Auction house sites
• Consumer to consumer (C2C)
– Web auctions
• Business to business (B2B)
– Supplier to manufacturer
– Producer to seller

11. E Commerce
• Comparison sites
• Security
– Payments
– Phishing sites ( Bogus Sites)
– Spywares
• Web utilities
– TELNET
– FTP
– Plug-ins
– Filters

12. SPYWARES
• Spyware is any technology that aids in
gathering information about a person or
organization without their knowledge. On
the Internet (where it is sometimes called
a spybot or tracking software), spyware is
programming that is put in someone's
computer to secretly gather information
about the user and relay it to advertisers
or other interested parties. Spyware can
get in a computer as a software virus or as
the result of installing a new program.

13. PLUGINS
• A software plug-in is an add-on for a
program that adds functionality to it. For
example, a Photoshop plug-in (such as
Eye Candy) may add extra filters that you
can use to manipulate images. A browser
plug-in (such as Macromedia Flash or
Apple QuickTime) allows you to play
certain multimedia files within your Web
browser. VST plug-ins add effects for
audio recording and sequencing programs
such as Cubase and Logic Audio.

14. Summary
• What is internet and the Web
• Different components of internet access
– Service provider, browser, website
• Internet communication
• Internet Search
• E Commerce