Copyright © 2003 by Prentice HallCopyright © 2003 by Prentice Hall

Module 12: The Internet and WWWModule 12: The Internet and WWW

1. A brief history of the Internet1. A brief history of the Internet2. World Web Web, a application of the Internet2. World Web Web, a application of the Internet3. Underlying technology3. Underlying technology4. Browsers and URL4. Browsers and URL5. Internet applications5. Internet applications6. Intranet6. Intranet

22Module 12: Internet and WWWModule 12: Internet and WWW

The fact about the InternetThe fact about the Internet

Growth in host computersGrowth in host computers 72 million in 200072 million in 2000 162 million in 2002162 million in 2002

Growth in users worldwideGrowth in users worldwide 567 million in 2002567 million in 2002 780 million projected in 2003780 million projected in 2003

33Module 12: Internet and WWWModule 12: Internet and WWW

A Quick TimelineA Quick Timeline

ARPANET developed in 1969ARPANET developed in 1969 Designed to connect computers at four locationsDesigned to connect computers at four locations Designed to be resistant to disruptionDesigned to be resistant to disruption

E-mail, file transfer, and remote access are basic applications of the E-mail, file transfer, and remote access are basic applications of the ARPANETARPANET

National Science Foundation connected its large network, NSFnet to National Science Foundation connected its large network, NSFnet to ARPANET in 1986ARPANET in 1986

Resulting network became known as the InternetResulting network became known as the Internet

World Wide Web is the mostly used Internet applicationWorld Wide Web is the mostly used Internet application Made the Internet took offMade the Internet took off Proposed and implemented by Proposed and implemented by Tim Berners-Lee,Tim Berners-Lee,19941994 The first browser, Mosiac was written by The first browser, Mosiac was written by Marc AndreessenMarc Andreessen

1313Module 12: Internet and WWWModule 12: Internet and WWW

Internet ApplicationsInternet Applications

Searching the InternetSearching the Internet

Traditional applications of the InternetTraditional applications of the Internet FTPFTP TelnetTelnet E-mailE-mail NewsgroupsNewsgroups

E-commerceE-commerce Business-to-consumer (B2C)Business-to-consumer (B2C) Business-to-business (B2B)Business-to-business (B2B) Consumer-to-consumer (C2C)Consumer-to-consumer (C2C)

1414Module 12: Internet and WWWModule 12: Internet and WWW

Searching the InternetSearching the Internet

Search Engine – lets a user Search Engine – lets a user specify search termsspecify search terms

Search engine builds database of Search engine builds database of sites that match those termssites that match those terms

Uses spider software to build Uses spider software to build databasedatabase

Metasearch – searches search Metasearch – searches search engines and builds engines and builds comprehensive listcomprehensive list

Internet directory – database is Internet directory – database is developed by human developed by human researchers rather than spiderresearchers rather than spider

2121Module 12: Internet and WWWModule 12: Internet and WWW

The World of E-CommerceThe World of E-Commerce

Electronic commerce - buying and selling Electronic commerce - buying and selling over the Internetover the Internet

Three formsThree forms Business-to-consumer (B2C)Business-to-consumer (B2C) Business-to-business (B2B)Business-to-business (B2B) Consumer-to-consumer (C2C)Consumer-to-consumer (C2C)

2929Module 12: Internet and WWWModule 12: Internet and WWW

Payments and TaxesPayments and Taxes

E-commerce paymentsE-commerce payments Some people are leery of submitting credit card Some people are leery of submitting credit card

information onlineinformation online Secure Sockets Layer (SSL) protocol provides a Secure Sockets Layer (SSL) protocol provides a

secure way to make online paymentssecure way to make online payments

E-commerce taxesE-commerce taxes Internet Tax Freedom Act provides tax relief on Internet Tax Freedom Act provides tax relief on

Internet commerceInternet commerce Commission studies the effects of taxation of Internet Commission studies the effects of taxation of Internet

commercecommerce Act set to expire in 2005Act set to expire in 2005

3030Module 12: Internet and WWWModule 12: Internet and WWW

Internet PortalsInternet Portals

Your first stop on the InternetYour first stop on the Internet Provide personalization to usersProvide personalization to users

Site is customized based on Site is customized based on information you provideinformation you provide

Encourages you to visit the site Encourages you to visit the site oftenoften

Provide referrals to other Provide referrals to other businessesbusinesses

Site contains links to affiliate sitesSite contains links to affiliate sites

If you click on an affiliate site and If you click on an affiliate site and make a purchase, the portal make a purchase, the portal receives a percentage of the salereceives a percentage of the sale

3131Module 12: Internet and WWWModule 12: Internet and WWW

Internet AdvertisingInternet Advertising

Many advertisements on Web Many advertisements on Web sites are banner adssites are banner ads

Originally in the shape of a long Originally in the shape of a long rectanglerectangle

Require the user to leave the Require the user to leave the current sitecurrent site

Other ad typesOther ad types Pop-over ads open a new Pop-over ads open a new

window on top of your current window on top of your current windowwindow

Pop-under ads open a new Pop-under ads open a new window underneath your current window underneath your current windowwindow

3232Module 12: Internet and WWWModule 12: Internet and WWW

IntranetsIntranets

A private Internet-like networkA private Internet-like network Internal to a certain companyInternal to a certain company

Extranets allow selected customers and suppliers Extranets allow selected customers and suppliers to have access to a company’s intranetto have access to a company’s intranet

Easy to set upEasy to set up Offer many potential usesOffer many potential uses Can be linked to the InternetCan be linked to the Internet

3333Module 12: Internet and WWWModule 12: Internet and WWW

Setting up an IntranetSetting up an Intranet

Easy to set upEasy to set up Most organizations already have a local area Most organizations already have a local area

networknetwork

Hardware requirementsHardware requirements

Software requirementsSoftware requirements

3636Module 12: Internet and WWWModule 12: Internet and WWW

Uses of IntranetsUses of Intranets

Users canUsers can Retrieve information such as benefits information and Retrieve information such as benefits information and

job openingsjob openings Submit vacation requests, applications for open Submit vacation requests, applications for open

positions, etc.positions, etc.

Employers can post employee handbooks, Employers can post employee handbooks, corporate policies, and other information in a corporate policies, and other information in a central locationcentral location