CH

APT

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THE INTERNET, THE WEB, AND ELECTRONIC COMMERCE

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Competencies

Discuss the origins of the Internet and the WebDescribe how to access the WebDiscuss Internet communicationsDescribe Internet search toolsDiscuss electronic commerceDiscuss Web utilities

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Internet or NET

Large network that connects smaller networks (cables , wires and satellite)Launched in 1969

National computer network project of united states called Advanced research project agency network (ARPANET)US funded project called ARPANET

World Wide Web (WWW) was introduced in 1992 at CERN (Center for European Nuclear Research) in Switzerland.Web is a multimedia interface to resources available on the internetWeb ≠ Internet

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Common Internet Applications or uses

Communicating Exchange e-mailChat Create your own webpage

ShoppingSearchingEntertainmentEducation or e-learning

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Access Providers

The most common way to access the internetis through a provider or host computer (university is provider which provide path or

connection)How to get “online” (connected to Internet)Commercial Internet Service Providers (ISP)

National(AOL: America online, telephone connection, inside the country , standard feeRegional (telephone connection, several states , standard fee+long-distance connection charges)Wireless service providers (wireless modems

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Connection Technology

Dial-up , DSl, cable and wireless modems.User computer is a Client that request services from the provider computer or Server

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User Connection Costs & Speeds

Type Fee Speed Seconds to Get Images

Dial-up $16 56 kbps 45.0

DSL 50 1.5 mbps 1.7

Cable Modem 40 1.5 mbps 1.7

Satellite 70 900 kbps 2.8

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Web Browsers

Programs that provide access to Web resourcesAllow you to surf the Internet Two well-known browsers

Netscape Navigator Microsoft Internet Explorer

Address or location of the resource must be specified

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URLsFor browser to connect to resources, the location or address of the recourses must be specified. These addresses are called uniform resource locator.Uniform Resource Locator

All URLs have at least two parts

Protocol (rules for exchanging data between computers)Domain name (name of the server where the resource is located)Code name (identify the type of organization :org. com. Edu.

Locates Web sites (= address)

http://www.google.comprotocol

domain nameNote: ftp://

domain code

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More on Browsers

Web site is the informational location.Once browser has connected to the web site , a document file is sent back to your computer. This document contains HTML commands. The browser interprets the HTML commands and displays the document as a webpage.Browsers interpret HTML commands

Hypertext Markup Language Contained in a document

Browsers display html documents as Web pagesWeb server: page presents information about the site with references or links

that connect to other documents. The computer that contains or share these document is called Web server.

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Communication

Most popular Internet activityTwo types of Internet communication

E-MailDiscussion Groups

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E-Mail or Electronic Mail

Transmission of electronic messages over the Internet.At one time Email consisted only of basic text message, now graphics , images , attachmentsConnect to internet, open email program.Two of the most widely used email program are Microsoft’s outlook express and Netscape's mail

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Parts of E-mailBasic parts

Header AddressSubjectAttachment

MessageSignature

Unwanted emails=spam

Cc stands for carbon copy which means that whose address appears after the Cc: header would receive a copy of the message. Also, the Cc header would also appear inside the header of the received message.Bcc stands for blind carbon copy which is similar to that of Cc except that the Email address of the recipients specified in this field do not appear in the received message header and the recipients in the To or Cc fields will not know that a copy sent to these address.

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E-Mail Address

The server providing the email service for the user is use.edu

The domain code indicates that the provider is an educational institution.

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Discussion Groups to share ideas and interest

Mailing lists (subscription address)

Fig 2.9

Newsgroups (special networks of

Fig 2-10

computer called Usenet (fig 2-10))

Chat groups (internet relay chat)

IRC

Instant Messaging (IM)

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Discussion Group Terms

Someone who has comprehensive knowledge about a subject

Wizard

A sequence of ongoing messages on the same subjectThread

Someone who aids new users by answering questionsSaint

Request for discussion RFD

Reading news but not joining in to contributeLurking

Insulting, putting down, or attacking Flaming

DescriptionTerm

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Search Toolssearch services locate information, database

Search provider operate website that can help you locate the information you need.Agent, spiders or bots: are special programs look for new information and update the search services databases.

Search engines (special software assist you in locating information

Metasearch enginesSpecialized search engines

Fig 2-17

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Search Engines

Specialized programs to assist you in locating information on the internetTypes of searches

Keyword searchMatch or compare with database

Directory searchCategories or topicseGeneral informationFig 2-13

search services website

Search engine

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Metasearch Engines

Visit the web sites for several individual search engines.Programs that automatically submit your search request to several search engines.The metasearch engine receives the result and order the hits and provide the edited list to you

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Metasearch Engines

www.vivisimo.comVivisimo

www.search.comSearch

www.profusion.comProFusion

www.metacrawler.comMetaCrawler

www.manna.comMamma

www.ixquick.comIxquick

www.dogpile.comDogpile

SiteMetasearch Service

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Electronic Commerce

Known as e-commerceBuying and selling of goods over the InternetThree basic types of electronic commerce:

Business-to-consumer (B2C)(e-banking, e-trading)

Consumer-to-consumer (C2C)(web auction)

Business-to-business (B2B)(computer , automobile parts

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Web Storefronts(program)

Virtual storesWeb storefront creation packages

Help businesses create virtual storesAllow visitors to register, browse, and make purchaseAlso called commerce servers

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Web Auctions

Consumer-to-consumer e-commerceSimilar to traditional auctions Types

Auction house sitesSell a wide goods to bidder directly, save place to shop

Person-to-person auction sitesNumbers of buyers and sellers .be careful

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Security

Payment methods must be fast, reliable, and secureThree basic options

ChecksCredit cardElectronic cash page 45

E-cashCybercashDigital cash

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Web Utilities

Telnet

FTPPlug-insFilters

www.macromedia.comShockwave

www.real.comRealPlayer

www.apple.comQuickTime

www.microsoft.comMedia Player

www.adobe.comAcrobat Reader

SourcePlug-in

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A Look to the FutureInternet2

A high bandwidth project for media-intensive files Collaboration of universities, the government, and private industry100 times faster than the InternetNot a separate Internet

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Key Terms

address (32)Advance Research Project Agency Network (ARPANET) (30)agent (40)applet (33)attachment (34)auction house site (44) bot (40)browser (32)

buddy (36)business-to-business (B2B) (43)business-to-consumer (B2C) (43)cable (32)carder (44)Center for European Nuclear Research (CERN) (30)

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Key Terms

channel (36)chat group (36)client (32)client-server network (32)commerce servers (43)computer virus (34)contact (36)consumer-to-consumer (C2C) (43)

cybercash (44)cybermall (30)dial-up (32)digital cash (44)directory search (69)discussion group (36)domain code (32)domain name (32)downloading (46)

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Key Terms DSL (32)e-cash (44)e-commerce (42)e-learning (30)electronic cash (44)electronic commerce (42)electronic mail (34)e-mail (34)

file transfer protocol (FTP) (46)filter (45)friend (36)header (34)hit (40)host computer (31)hyperlink (33)Hypertext Markup language (HTML) (33)

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Key Terms index search (40)instant messaging (IM) (36)Internet (30)Internet Relay Chat (IRC)(36) Internet Service Provider (ISP) (32)Java (32)keyword search (40)link (33)

list address (36)location (32)lurking (37)mailing list (36)message (34)metasearch engine (41)national service provider (32)Net (30)newsgroup (36)online (30)

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Key Terms

person-to-person auction site (44)plug-in (46)protocol (32)provider (31)regional service provider (31)search engine (40)search provider (40)

search service (40)server (32)signature line (34)spam (34)specialized search engine (429)spider (40)subject (34)subscription address (36)

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© 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

Key Terms

Surf (32)Telnet (46)Uniform resource locator (URL) (32)uploading (46)UseNet (36)virtual library (30)Web (30)Web auction (43)

Web page (33)Web server (33)Web site (33)Web storefront (43)Web storefront creation package (43)Web utility (45)wireless modem (32)wireless service provider (32)

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Key Terms

World Wide Web (30) WWW (30)

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FAQs

What is the difference between the Internet and the Web?What is an ISP?What type of program is Microsoft Internet Explorer?I want to shop for items using the Internet. How do I pay for my purchases?What are the advantages of Internet2?

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Discussion Questions

Discuss the history of the Internet.List the Internet Service Providers (ISPs) that are available in your area.Describe the advantages of using Instant Messaging (IM). Explain the differences between search engines and metasearch engines.Explain how to use a Web auction.