© 2012 The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 02: The Internet, Chapter 02: The Internet, the Web, and Electronic the Web, and Electronic

CommerceCommerce

Chapter 02: The Internet, Chapter 02: The Internet, the Web, and Electronic the Web, and Electronic

CommerceCommerce

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IntroductionIntroduction

• The Internet is often referred to as the The Internet is often referred to as the Information Superhighway Information Superhighway because it because it connects millions of people across the globe.connects millions of people across the globe.

• Unlike a typical highway, the Internet moves Unlike a typical highway, the Internet moves ideas, data, and information through ideas, data, and information through networks.networks.

• The Web provides an easy-to-use, intuitive The Web provides an easy-to-use, intuitive multimedia interface to connect to the multimedia interface to connect to the Internet.Internet.

• Competent end users need to be aware of Competent end users need to be aware of the resources available on the Internet and the resources available on the Internet and the Web.the Web.

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The Internet and the The Internet and the WebWeb

• The Internet is the largest global The Internet is the largest global network, connecting smaller networks network, connecting smaller networks worldwideworldwide

• The Internet was launched in 1969The Internet was launched in 1969 – National computer network National computer network – US funded project called US funded project called ARPANET ARPANET

• The World Wide Web or WWW was The World Wide Web or WWW was introduced in 1991 at introduced in 1991 at CERNCERN

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Common Internet UsesCommon Internet Uses

• Communicating Communicating – Exchange Exchange e-maile-mail– Discussion groupsDiscussion groups

• Online ShoppingOnline Shopping• SearchingSearching

– Virtual librariesVirtual libraries

• EntertainmentEntertainment• Education or Education or e-learninge-learning

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AccessAccess

• Common way to access the Internet is Common way to access the Internet is through a Commercial through a Commercial Internet Internet Service Providers (ISP)Service Providers (ISP)– National Service ProvidersNational Service Providers– Wireless service providersWireless service providers

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BrowsersBrowsers

• Programs that provide access to Web Programs that provide access to Web resourcesresources

• Allow you to Allow you to surfsurf the Internet the Internet • Popular Web Popular Web browsers browsers include:include:

– Mozilla FirefoxMozilla Firefox– Apple SafariApple Safari– Microsoft Internet ExplorerMicrosoft Internet Explorer– Google ChromeGoogle Chrome

• Address Address or locationor location of theof theresource must be specifiedresource must be specified– URLURL

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URLsURLs

• Uniform Resource LocatorsUniform Resource Locators– All URLs have at least two partsAll URLs have at least two parts

• ProtocolProtocol• Domain nameDomain name

• Top-level domains (TLDs) provide Top-level domains (TLDs) provide further information about the websitefurther information about the website

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More on BrowsersMore on Browsers

• Browsers interpret HTML commandsBrowsers interpret HTML commands – Hypertext Markup Language Hypertext Markup Language – Contained in a documentContained in a document

• Display documentDisplay documentas a as a Web pageWeb page

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CommunicationCommunication

• Most popular Internet activityMost popular Internet activity• Types of communication Types of communication

– Electronic Mail Electronic Mail ((E-Mail))– Instant Messaging– Social Networking

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E-MailE-Mail

• Transmission of electronic messages Transmission of electronic messages over the Internetover the Internet

• Basic partsBasic parts– Header Header

• AddressAddress• SubjectSubject• AttachmentAttachment

– MessageMessage– Signature LineSignature Line

Return

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E-Mail Address ExampleE-Mail Address Example

Return

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Spam Spam

• Junk and/or unwanted e-mailJunk and/or unwanted e-mail• Computer viruses Computer viruses or or destructive destructive

programs are often attached to programs are often attached to unsolicited emailunsolicited email– CAN-SPAM ActCAN-SPAM Act

• Spam blockersSpam blockers use a variety of use a variety of approaches to identify and control approaches to identify and control spam spam

• Spam blockers are also referred to as:Spam blockers are also referred to as:– Junk mail filtersJunk mail filters– Anti-spam programsAnti-spam programs

Return

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Instant MessagingInstant Messaging

• Extension of email that provides direct, Extension of email that provides direct, live communication between two or more live communication between two or more peoplepeople

• Instant messaging programs also include:Instant messaging programs also include:– Video conferencing featuresVideo conferencing features– File sharingFile sharing– Remote assistanceRemote assistance

• Most widely used instant messaging Most widely used instant messaging services:services:– AOL’s Instant MessengerAOL’s Instant Messenger– Microsoft’s MSN MessengerMicrosoft’s MSN Messenger– Yahoo MessengerYahoo Messenger Return

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Social NetworkingSocial Networking

• One of the fastest growing uses of One of the fastest growing uses of the Internetthe Internet

• Three basic categories:Three basic categories:– Reuniting sitesReuniting sites– Friend-of-a-friend sites Friend-of-a-friend sites – Common interest sitesCommon interest sites

Return

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Blogs, Microblogs, and Blogs, Microblogs, and WikisWikis

• Web logs or blogs – postings that are Web logs or blogs – postings that are date- and time-stamped and then date- and time-stamped and then arranged with the most recent items arranged with the most recent items shown firstshown first

• Microblogs – short status updates or Microblogs – short status updates or sentences that answer the question:sentences that answer the question:– What are you doing now?What are you doing now?

• Wiki – a specially designed Web site Wiki – a specially designed Web site that allows visitors to edit the that allows visitors to edit the contents (e.g., fill in missing contents (e.g., fill in missing information) information)

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Search ToolsSearch Tools

• Search engines• Metasearch engines• Specialized search engines • Content Evaluation

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Search EnginesSearch Engines

• Specialized programs to assist in Specialized programs to assist in locating informationlocating information

• Types of searchesTypes of searches– Keyword searchKeyword search

– Directory searchDirectory search

Return

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Metasearch EnginesMetasearch Engines

Return

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Specialized Search Specialized Search EnginesEngines

Return

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Content EvaluationContent Evaluation

• Not all information on the web is Not all information on the web is accurateaccurate

• Ways to evaluate accuracy of Web Ways to evaluate accuracy of Web information include:information include: – AuthorityAuthority– AccuracyAccuracy– ObjectivityObjectivity– CurrencyCurrency

Return

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Electronic CommerceElectronic Commerce

• Also known as Also known as e-commercee-commerce• Buying and selling of goods over the Buying and selling of goods over the

InternetInternet– Business-to-consumer ((B2CB2C))– Consumer-to-consumer (Consumer-to-consumer (C2CC2C))

• Web auctions– Business-to-business ( (B2BB2B))

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Business to BusinessBusiness to Business

• Involves the sale of a product or service Involves the sale of a product or service from one business to another (B2B)from one business to another (B2B)

• Primarily a manufacturer supplier Primarily a manufacturer supplier relationshiprelationship

Return

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Business to ConsumerBusiness to Consumer

• Fastest growing type of e-commerceFastest growing type of e-commerce• Three most widely used B2C applications: Three most widely used B2C applications:

– Online bankingOnline banking– Financial trading Financial trading – ShoppingShopping

Return

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Consumer to Consumer Web Consumer to Consumer Web AuctionsAuctions

• Consumer-to-consumer e-commerce Consumer-to-consumer e-commerce (C2C)(C2C)

• Similar to traditional auctions Similar to traditional auctions • TypesTypes

– Auction house sitesAuction house sites– Person-to-person auction sites Person-to-person auction sites

Return

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Security Security

• Payment methods must be fast, Payment methods must be fast, reliable, and securereliable, and secure

• Three basic optionsThree basic options– ChecksChecks– Credit cardCredit card– Digital cashDigital cash

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Cloud ComputingCloud Computing

• Shifts computing activities from Shifts computing activities from users’ desktops to computers on the users’ desktops to computers on the InternetInternet

• Frees end-users from owning, Frees end-users from owning, maintaining, and storing software maintaining, and storing software programs and dataprograms and data

• Three basic components:Three basic components:– Clients (end-users)Clients (end-users)– Service providersService providers– The InternetThe Internet

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Web UtilitiesWeb Utilities

• Specialized utility programs that Specialized utility programs that make using the Internet & Web safer make using the Internet & Web safer and easierand easier– Plug-InsPlug-Ins– FiltersFilters– File Transfer UtilitiesFile Transfer Utilities– Internet SecurityInternet Security

SuitesSuites

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Plug-InsPlug-Ins

• Programs that provide an enhanced Programs that provide an enhanced browsing experience by enabling browsing experience by enabling special file formats and multimedia special file formats and multimedia elementselements

Return

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FiltersFilters

• Programs that block access to Programs that block access to selected sitesselected sites

Return

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File Transfer UtilitiesFile Transfer Utilities

• Programs that help you upload and Programs that help you upload and download files to and from the download files to and from the InternetInternet

• Three popular types of programs:Three popular types of programs:– File transfer protocol (FTP & SFTP)File transfer protocol (FTP & SFTP)– Web-based file transfer servicesWeb-based file transfer services– BitTorrentBitTorrent

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Internet Security SuitesInternet Security Suites

• Programs designed to maintain your Programs designed to maintain your security and privacy while on the websecurity and privacy while on the web

Return

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Careers In IT - Careers In IT - WebmastersWebmasters

• Develop, maintain, and back-up Develop, maintain, and back-up websiteswebsites

• Acquire, development, and maintain Acquire, development, and maintain information resourcesinformation resources

• Work with the marketing Work with the marketing department to increase sitedepartment to increase sitetraffic and monitor the flowtraffic and monitor the flowof customer interactionsof customer interactions

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A Look to the Future A Look to the Future Web-Accessible Refrigerators Web-Accessible Refrigerators

• ““Smart” appliances in homes will Smart” appliances in homes will have their own Web pagehave their own Web page

• Refrigerators know what food they Refrigerators know what food they contain contain

• Appliance could send an e-mail list to Appliance could send an e-mail list to the grocery store for restockingthe grocery store for restocking

• Downsides?Downsides?

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Open-Ended Questions Open-Ended Questions (Page 1 of 2)(Page 1 of 2)

• Discuss the Internet, including its origins and Discuss the Internet, including its origins and most common uses. What activities have you most common uses. What activities have you participated in? Which one do you think is participated in? Which one do you think is the most popular?the most popular?

• Discuss Internet communications, including Discuss Internet communications, including e-mail, instant messaging, social networking, e-mail, instant messaging, social networking, blogs, microblogs, and wikis.blogs, microblogs, and wikis.

• Describe the different types of search Describe the different types of search engines. Give an example of the type of engines. Give an example of the type of search that each search engine is best for.search that each search engine is best for.

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Open Ended Questions Open Ended Questions (Page 2 of 2)(Page 2 of 2)

• Describe electronic commerce, including Describe electronic commerce, including business-to-consumer, consumer-to-business-to-consumer, consumer-to-consumer, and business-to-business e-consumer, and business-to-business e-commercecommerce..

• What is cloud computing? Describe the What is cloud computing? Describe the three basic components of cloud computing.three basic components of cloud computing.

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Competencies Competencies (1 of 2)(1 of 2)

• Discuss the origins of the Discuss the origins of the Internet Internet and the and the WebWeb

• Describe how to access the Web using Describe how to access the Web using providers and browsersproviders and browsers

• Discuss Internet communications, including Discuss Internet communications, including e-mail, instant messaging, social e-mail, instant messaging, social networking, blogs, networking, blogs, microblogs, and wikis.microblogs, and wikis.

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CompetenciesCompetencies (2 of 2)(2 of 2)

• Describe search tools, including search engines, Describe search tools, including search engines, metasearch engines, and specialized search metasearch engines, and specialized search engines.engines.

• Evaluate the accuracy of information on the Evaluate the accuracy of information on the Web.Web.

• Discuss Discuss electronic commerceelectronic commerce, including , including B2CB2C, , C2CC2C, , B2BB2B, and , and security issuessecurity issues..

• Describe Describe cloud computingcloud computing, including the three-, including the three-way interaction of clients, Internet, and service way interaction of clients, Internet, and service providers.providers.

• Describe Describe Web utilities Web utilities including including plug-insplug-ins,, filters filters,, file transfer utilitiesfile transfer utilities , and , andInternet security suitesInternet security suites..