1. Internet Network of networks Mother of all networks
Planted in 1969 – ARPA (Advanced Research Project Agency) under US Dept. of Defense
Resulting network called ARPANET
Create a large computer network with multiple paths
Wanted users in remote locations to be able to share scarce computing resources

2. Internet At first four primary host computers Rapid growth
*Host – network server, providing services to other computers that connect to it
Rapid growth
1973 – jumped across the Atlantic to Norway and England
Mid 1980s – NSF (National Science Foundation) was founded
Established five “supercomputing centers”
Available to anyone who wanted to use them for academic research services

3. Internet Demand increased
NSF created a new, higher capacity network NSFnet
Link between ARPANET, NSFnet and other networks was called INTERNET
*internetworking – the process of connecting separate networks
*internetworked – a collection of “networked networks” or a worldwide network of networks
For private purposes
Private telecommunications built their own network backbones

4. Internet
*network backbone – is the central structure that connects other elements of the network
*distribute business and commercial information
1990 – original ARPANET was shut down
1995 – government funding for NSFnet was discontinued

6. World Wide Web, Browsers and Definition
Web pages
Specially formatted documents which can contain text, graphics and multimedia objects
Can display navigational tools to help you move around within a web page
To move from on page to another within a Web Site or to move among different sites
Web browser
a special software program that access the Web
Example: IE, Mozilla, Netscape, Opera, Chrome
Unique feature and capabilities

7. World Wide Web, Browsers and Definition
Web site
collection of related Web pages
Formatted with HTML (Hypertext Mark-up Language)
URL
Uniform resource locator
Domain name / subdomain name
Hyperlink
is simply a part of the Web page that is linked to a URL
Navigation tools
Hyperlinked pictures or graphical buttons
Browser’s navigation tools
Backward and forward button
Bookmark
History list

8. World Wide Web, Browsers and Definition
Web-based search tools
Directories – enables to search for information by selecting categories of subject matter
Search engines – lets you search for information by typing one or more words
Type of lookup is called keyword search
Using boolean operators
AND
both terms and ignores pages that include only one of them OR
include pages that include either or both of the terms
NOT
looks for pages that include a term only which do not also include the other term, ignores pages that include both terms
NEAR
determines the proximity, or closeness, of your specified words

9. World Wide Web, Browsers and Definition
Web-based search tools
Metasearch engines
Use multiple search engines simultaneously to lookup sites that match your keywords, phrase or question
Site specific
Enables you took up for information on the Web site you currently visiting