Computers:Tools for an Information Age

Chapter 8The Internet at Home and in the Workplace

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Objectives

Briefly describe the history of the InternetDescribe what is needed to get on the InternetDescribe generally what an Internet service provider doesDescribe the rudimentary functions of a browserDescribe how to search the Internet

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Objectives

List and describe the non-Web services of the InternetDescribe the various types of e-commerceDiscuss e-commerce payments and taxesDescribe how advertising is done on the InternetDescribe what an intranet is and how a business uses it

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Growth of Internet

Growth in host computers 72 million in 2000 162 million in 2002

Growth in users worldwide 567 million in 2002 780 million projected in 2003

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A Quick TimelineARPANET developed in 1969 Designed to connect computers at four

locations Designed to be resistant to disruption

E-mail capability added in 1972National Science Foundation connected its large network, NSFnet to ARPANET in 1986 Resulting network became known as the

Internet

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Key People

Tim Berners-LeeMarc Andreessen

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Getting Started

The technologyThe Internet service provider and the browserBrowser functions and features

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Searching the Internet

Search Engine – lets a user specify search terms

Search engine builds database of sites that match those terms

Uses spider software to build database

Metasearch – searches search engines and builds comprehensive list

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

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Non-Web Services of the Internet

NewsgroupsFTPTelnetE-mail

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The World of E-Commerce

Electronic commerce - buying and selling over the InternetThree forms Business-to-consumer (B2C) Business-to-business (B2B) Consumer-to-consumer (C2C)

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Payments and Taxes

E-commerce payments Some people are leery of submitting credit

card information online Secure Sockets Layer (SSL) protocol provides

a secure way to make online payments

E-commerce taxes Internet Tax Freedom Act provides tax relief

on Internet commerce Commission studies the effects of taxation of

Internet commerce Act set to expire in 2005

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Internet PortalsYour first stop on the Internet

Provide personalization to users

Site is customized based on information you provide

Encourages you to visit the site often

Provide referrals to other businesses

Site contains links to affiliate sites

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

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Internet Advertising

Many advertisements on Web sites are banner ads

Originally in the shape of a long rectangle

Require the user to leave the current site

Other ad types Pop-over ads open a new

window on top of your current window

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

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Intranets

A private Internet-like network Internal to a certain company

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

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

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Setting up an Intranet

Easy to set up Most organizations already have a

local area network

Hardware requirementsSoftware requirements

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Uses of Intranets

Users can Retrieve information such as benefits

information and job openings Submit vacation requests, applications

for open positions, etc.

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

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Virtual Private Network

Technology that uses the Internet as a channel for private data communicationUses tunneling technologyOffers many benefits over a private network Much cheaper than dedicated lines Data is secure Turns remote network administration over

to ISP