the world wide web and the internet how vast is your virtual imagination? chapter 2

The World Wide Web and the

Internet

How Vast Is Your Virtual Imagination?

Chapter 2

©2003 The McGraw-Hill Companies

Student Learning Outcomes

1. Describe electronic commerce, the two primary types of e-commerce businesses, and the three primary e-commerce activities.

2. Describe the relationships between Web terms, including Web site, Web page, Web site address (domain name), Web page address (URL), and top-level domain.

3. Contrast the use of directory search engines and true search engines.


Student Learning Outcomes

4. Describe the various types of Web multimedia formats and the software you need to enjoy Web multimedia.

5. Identify four main options for an Internet service provider and your four choices for a modem.


Introduction

Electronic commerce allows businesses to reach more customers, distribute information quickly, establish strong and lasting relationships, and be innovative in how they perform all types of commerce. However, without the World Wide Web and the Internet this would not be possible.


2.1 Electronic Commerce

• Technology enables you to:– Reach more customers– Distribute information quickly– Establish relationships– Be innovative in commerce functions

• E-commerce is commerce that is facilitated and enhanced by technology

SimNet Concepts Support CD: “Introduction to the Internet and the World Wide Web”


Types of E-Commerce Business

• Brick-and-Mortar Businesses– Physical location only– Performs no e-commerce functions

• Click-and-Mortar Businesses– Presence in the physical world and a Web site– Web site that supports e-commerce

• Example: JCPenney


Types of E-Commerce – cont.

• Click-and-Order Business (pure plays)

– Exists solely on the Web with no physical presence

– Example

• Amazon.com


Click-And-Mortar Business:JCPenney


Click-And-Order Business:CD Quest

p.2.37 Fig. 2.1


Business to business (B2B)- Sale of products and services to customers who are primarily other businesses

Consumer to consumer (C2C)- Individual sells products and services to another person or individual

Types of E-Commerce Activities

Business to consumer (B2C)- Sale of products and services to customers who are primarily individuals


Business to Business (B2B)

p. 2.38 Fig 2.2


Consumer to Consumer (C2C)

• Individuals sell products and services to other individuals

• Example – eBay– Click-and-order business– Provides an electronic

marketplace

SimNet Concepts Support CD: “B2B and E-Commerce” and “E-Commerce and Shopping Online”


2.2 The World Wide Web

InternetInternet

A vast network of computers that connects

millions of people all over the world.

InternetInternet

A vast network of computers that connects

millions of people all over the world.

World Wide Web (Web)World Wide Web (Web)

A multimedia-based collection of information,

services, and Web sites supported by the Internet.

World Wide Web (Web)World Wide Web (Web)

A multimedia-based collection of information,

services, and Web sites supported by the Internet.


How Old is the Internet?

• Began with military research in 1957

• Connected computers formed ARPANet in 1969

• World Wide Web browsers created in 1991


Web Sites, Pages, and Addresses

• Web browser software used to surf the Web

• Web site specific location on the Web

• Web page specific portion of a Web site

• Web site address unique name (domain name) for an entire Web site

• Web page address unique name (URL) for a Web page within a Web site


Web Browser Software

Two most popular Web browsers are:

MicrosoftInternetExplorer

Netscape Communicator

SimNet Concepts Support CD: “Web Browsers”


USA Today Web Site

Web Site

Web Pages

p. 2.39 Fig 2.3


Web Site Hierarchy

www.usatoday.comwww.usatoday.com

www.usatoday.com/sports/sfront.htmlwww.usatoday.com/sports/sfront.html

www.usatoday.com/sports/tennis/tennis.htmlwww.usatoday.com/sports/tennis/tennis.html


The Anatomy of a URL

SimNet Concepts Support CD: “Web Pages”

p. 2.40 Fig 2.4


Some Top-Level Domains

Domains Description

Com Commercial or for-profit business

Edu Educational institution

Gov U.S. government agency

Mil U.S. military organization

Net Internet administrative organization

Org Professional or non-profit organization

Int International treaties organization p.2.40 Fig. 2.4


Using Search Engines

• Search Engine– Facility on the Web– Finds Web sites by

key word or words

• Two main types– Directory search

engine• Yahoo!

– True search engine• Ask Jeeves


True Search Engine: Ask Jeeves

p. 2.41 Fig. 2-5


Search Engines

• Mamma.com – www.mamma.com

• AltaVista – www.altavista.com

• HotBot – www.hotbot.com

• Lycos –www.lycos.com

• Webcrawler – www.webcrawler.com

SimNet Concepts Support CD: “Searching for Information on the Internet”


Enjoying Web Multimedia

• Web Multimedia– The use of audio, video, animation, and other

elements – Allows interactivity on a Web site or page– Helps businesses attract and retain

customers

SimNet Concepts Support CD: “Web Utilities: Plug-Ins and Helper Applications”


Plug-Ins and Players

• Plug-Ins– Software that

works within your browser to play multimedia

– If not installed, will get a message

– Macromedia Flash, Shockwave

• Players– Viewers– Software that

works outside your browser to play multimedia

– Windows Media, Player, RealNetworks RealPlayer


Plug-Ins & Players

p. 2.44 Fig. 2.7 & 2.8


Multimedia Formats

• Web Audio– Web audio – all the

sounds and music on the Web.

– Sounds are .wav (wave) or .au (audio) files

– Current browsers come equipped with plug-ins.

• Web Video– Web video – all the

video footage on the Web

– QuickTime file formats or Windows AVI format

– Can view with plug-ins, QuickTime Media Player, or Windows Media Player


Multimedia Formats

• Streaming Media– Continually sends small

parts of a large file to your Web browser

– Don't have to wait until entire file has been downloaded

– Works for audio or video files

– Use Windows Media Player, RealNetworks RealPlayer, or QuickTime Player


Interactive Web Multimedia: Flash Plug-In

• Flash is software that helps you create animated and interactive Web pages

• Flash plug-in enables you to view and interact with Flash-based Web pages

• Designed by Macromedia


Interactive Web Multimedia: Shockwave Player

• Shockwave is software that helps you create Web pages with significant interactivity through multimedia

• Designed by Macromedia

• Shockwave player enables you to view and interact with Shockwave-based Web pages (shocked pages)


Interactive Web Multimedia:Virtual Reality Modeling Language

• VRML allows you to:– Participate in a virtual world in which you have

the illusion that you are physically participating in the presentation of the Web multimedia

– Displays three-dimensional images, and a VRML player provides you with controls that allow you to turn the 3-D images and view them from different perspectives

SimNet Concepts Support CD: “Virtual Reality and Artificial Intelligence”


2.3 The Internet Behind the Web

• Internet makes the Web possible• Internet Technology

– Network– Internet backbone– Network access point (NAP)– Network service provider (NSP)

SimNet Concepts Support CD: “Introduction to the Internet and World Wide Web”


Internet Backbone

p. 2.47 Fig. 2.10


Computers on the Internet

• Internet server computer (host computer)– Computer that provides information and services to

other computers and Internet users– High-end work station, minicomputer, or mainframe

• Web client computer– Computer used to surf the Internet and access

information and services on a server computer– Desktop, notebook, smart phone, PDA, or tablet PC

SimNet Concepts Support CD: “Internet Appliances”


Types of Servers on the Internet

• Web server provides information and services to Web surfers

• FTP server maintains a collection of files that can be downloaded

• IRC server supports use of discussion groups and chat rooms

• Mail server provides e-mail services and accounts


FTP Server: ZDNet

p. 2.48 Fig. 2.11


Information on the Internet

• Communications protocol– A set of rules that every computer follows to

transfer information– Different types of computers handle

information in different forms

• To communicate effectively, computers must have common protocols for moving information among themselves on the Internet


Internet Protocols

TCP/IPTCP/IP httphttp FTPFTP


Protocols

• TCP/IP (Transfer Control Protocol/Internet Protocol)

– Basic protocol that makes the Internet work

• Hypertext transfer protocol (http)

– Supports movement of info over the Web– To access a Web site, you use TCP/IP and http

• File transfer protocol (FTP)

– Transfer files from one computer to another– Can download a variety of file types


2.4 Getting Connected

Modem

Software

ISP

Computer Provide

GatewayInternet

Four things required to get connected to the Internet

SimNet Concepts Support CD: “Connecting to the Internet”


Options for Internet Service Providers

Work Place

School

Commercial ISP

Free ISP

SimNet Concepts Support CD: “Internet Service Providers” and “Connecting to the Internet”


Commercial ISPs

• Charge a monthly fee

• May place a limit on Internet time

• Provides Web space for your Web site

• Can offer 24-hour technical support

• Offers free e-mail, chat rooms, and instant messenger

• MSN, AOL, and AT&T WorldNet


Commercial ISPAT&T WorldNet

p. 2.51 Fig. 2.12


Free ISPs

• Absolutely free

• May display advertising banners

• No or limited Web space

• Limited technical support

• Popular free ISPs– Freelane, FreeInternet, and Juno


Free ISPJuno


Different Types of Modems

Telephone modem

Digital Subscriber Line (DSL) modem

Cable modem

Satellite modem


Telephone Modem

• A telephone for your computer

• A device that connects your computer through a phone line to a network

• Changes the digital computer signal to an analog phone-line signal

• To access the Internet…– Telephone modem– Phone line– Internet Service

Provider– Connectivity software


Telephone Modems


More on Telephone Modems

• Usually built into the motherboard or is an expansion card

• Generally has two RJ-11 telephone jacks

• Slowest type of Internet connection– Fastest speed is 56Kbps

• To get a faster connection use DSL, a cable or satellite modem, or wireless


Digital Subscriber Line (DSL)

• A high-speed Internet connection using the phone line

• Can talk on the phone while surfing the Internet


DSL Modems

• 100 times faster than a phone modem• “Always on”• Can use the same phone line for voice

connections• If you have a home network with a router,

can use the same DSL connection for multiple computers

• Must live within range of phone company


Cable Modem

• Use cable TV wiring

• Both cable TV and Internet connection travel on one wire– Splitter in home router directs signal – Cable modem attaches to Ethernet card or

USB port

• Between 20 and 100 times faster than a telephone modem


DSL & Cable

p. 2.52-2.53 Fig. 2.13 & 2.14


Satellite Modem

• Modem that allows you to get Internet access using a satellite dish (antenna)– Some satellite dishes can give

both Internet access and TV reception

• Satellite modem usually uses a USB port

• Software comes with the satellite modem


Connectivity Software for Surfing the Web

• Software– Connectivity software– Web browser

p. 2.54 Fig. 2.15


E-mailMicrosoft Outlook

• E-mail addresses are unique

• Typical format is [email protected]


2.5 Consumer Q&A

1. What is the Format of an E-mail Address?2. How Fast Can I Surf the Web?3. Can I Spend Too Much Time Surfing the

Web?4. How Can I Get My Business Online?5. Can I Take Advantage of Web E-commerce

Using a PDA or Smart Phone?

SimNet Concepts Support CD: “Using E-Mail” and “Web Hosting”


2.6 Key Terms

• Brick-and-mortar business

• B2B e-commerce• B2C e-commerce • C2C e-commerce• Cable modem• Click-and-mortar

business

• Click-and-order business

• Connectivity software• Directory search engine• Domain name• Digital Subscriber Line

(DSL) modem• File transfer protocol

(FTP)


2.6 Key Terms

• Flash• FTP server• Internet• Internet server

computer• Internet service

provider• Internet relay chat• Mail server

• Player• Plug-in• Satellite modem• Shockwave• Steaming media• TCP/IP• Telephone modem


2.6 Key Terms

• True search engine• Uniform resource

locator • Virtual Reality

Modeling Language (VRML)

• Web audio• Web browser

software

• Web page• Web server• Web site• Web site address• Web video• World Wide Web


Review of Concepts

1. Identifying Servers on a Web Page

2. Matching Technical Terms

3. Comparing the Real World to the Web & Internet What is the equivalent of the yellow pages?

4. Dissecting a Web Page Address


Hands On ProjectsE-Commerce

1. Setting Up a Business on the Web How do Web hosts advertise your site?

2. Participating in E-Commerce Auctions Got eBay?

3. Finding an ISP How much Web space do you need?


Hands On ProjectsEthics, Security & Privacy

1. Finding Social Security Numbers on Deceased People

The law requires it

2. Finding Personal Information on the Web Could someone find your shoe size?

3. Finding E-Mail Addresses on the Web


Hands On Projectson the Web

1. Registering a Domain Name www.whatsyourname.com

2. Finding Maps and Directions Never be lost again

3. Your School’s Web Site Structure


Hands On ProjectsGroup Activities

1. Learning about Web Space at Your School

2. Managing Your Cookies Are Oreos good for your computer?

3. Finding a Regional ISP

4. Connecting to the Web through Your School How easy is it?

the world wide web and the internet how vast is your virtual imagination? chapter 2

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