© 2009 Prentice-Hall, Inc. 1. 2 Test on Wednesday Chapters 1, 2, 3 Multiple choice, True or FalseChapters 1, 2, 3 Multiple choice, True or False Team

© 2009 Prentice-Hall, Inc.1


Test on WednesdayTest on Wednesday• Chapters 1, 2, 3 Multiple choice, True or FalseChapters 1, 2, 3 Multiple choice, True or False

• Team Review on Wednesday – extra creditTeam Review on Wednesday – extra credit

• Review on-line study guides at Review on-line study guides at www.prenhall.com/techinaction

• Review back of the chapter questionsReview back of the chapter questions

• Review presentationsReview presentations


Technology in ActionTechnology in Action

Chapter 3Chapter 3

Using the Internet: Using the Internet:

Making the Most of the Web’s ResourcesMaking the Most of the Web’s Resources


Chapter TopicsChapter Topics• Forms of Internet communication (group)Forms of Internet communication (group)

• Internet multimediaInternet multimedia

• E-commerceE-commerce

• Managing online annoyancesManaging online annoyances

• Web browsers Web browsers

• URLs and HyperlinksURLs and Hyperlinks

• Search enginesSearch engines

• Evaluating Web sitesEvaluating Web sites


Internet CommunicationsInternet Communications

• Instant MessagingInstant Messaging• PodcastsPodcasts• Blogs and VlogsBlogs and Vlogs• WebcastsWebcasts• Wikis Wikis • Voice over Voice over

Internet (VoIP)Internet (VoIP)• E-mailE-mail


Web EntertainmentWeb Entertainment

MultimediaMultimedia is the combination of text, graphics, sound, is the combination of text, graphics, sound, and/or motion video. and/or motion video.

• Graphics (drawing, charts, photos)Graphics (drawing, charts, photos)• AudioAudio• VideoVideo

– Streaming audio and video Streaming audio and video • continuous feed – watch as the file downloadscontinuous feed – watch as the file downloads

104


Web EntertainmentWeb EntertainmentMultimediaMultimedia

is the combination of text, graphics, sound, is the combination of text, graphics, sound, and/or motion video. and/or motion video.

– Some multimedia files require plug-ins softwareSome multimedia files require plug-ins software• Adobe Reader, Quick Time Player, Shockwave Adobe Reader, Quick Time Player, Shockwave

PlayerPlayer

• Newer computers have many plug-ins installedNewer computers have many plug-ins installed

• Sites usually have a link for free downloadSites usually have a link for free download

• French Riveria

104


E-CommerceE-Commerce• E-Commerce: Conducting business onlineE-Commerce: Conducting business online

– $100 billion industry$100 billion industry– By 2012, 30% of retail salesBy 2012, 30% of retail sales

– Business-to-consumer (B2C)Business-to-consumer (B2C)• Amazon.com – bestbuy.com – overstock.comAmazon.com – bestbuy.com – overstock.com

– Business-to-business (B2B)Business-to-business (B2B)• Sunoco Commercial & Wholesale Business

– Consumer-to-consumer (C2C)Consumer-to-consumer (C2C)• E-bay.com - E-bay.com - www.www.craigslistcraigslist.org.org


E-Commerce SafeguardsE-Commerce Safeguards

• Online transactions can be safer than traditional Online transactions can be safer than traditional retail shoppingretail shopping

– Eliminating a sales clerkEliminating a sales clerk

• VeriSign is a company that certifies that online VeriSign is a company that certifies that online transactions are secure transactions are secure

• Closed padlock icon indicates a secure web siteClosed padlock icon indicates a secure web site

• URL changes from http:// to https://URL changes from http:// to https://

– https://www.amazon.com/gp/cart/view.htmlhttps://www.amazon.com/gp/cart/view.html



E-Commerce SafeguardsE-Commerce Safeguards• Shop at well known, reputable sitesShop at well known, reputable sites

– www.bbb.org– www.bizrate.com

• Restrict use of 1 credit card for on-line purchasesRestrict use of 1 credit card for on-line purchases

• Get a confirmation number – phone number – Get a confirmation number – phone number – mailing address – web site addressmailing address – web site address

• Print a copy of the order and save it.Print a copy of the order and save it.


Online AnnoyancesOnline Annoyances

• SpamSpam

• CookiesCookies

• Adware/Pop-upsAdware/Pop-ups

• SpywareSpyware

• MalwareMalware

• Phishing and HoaxesPhishing and Hoaxes


SpamSpam

• Junk e-mailJunk e-mail• Avoid spam:Avoid spam:

– Separate Separate e-mail accounte-mail account

– Spam filtersSpam filters• AddressAddress• wordswords

– Antispam practicesAntispam practices• Don’t give the site permission to use for third parties Don’t give the site permission to use for third parties • Don’t reply to SPAM – remove me from your listDon’t reply to SPAM – remove me from your list• Subscribe to an e-mail forwarding service (screen/forward)Subscribe to an e-mail forwarding service (screen/forward)

106


Cookies Cookies • Some Web sites store text files on your hard diskSome Web sites store text files on your hard disk

• Information is used on return visits to Web sitesInformation is used on return visits to Web sites

• Personal information rememberedPersonal information remembered

– Ads – products – credit card, mailing address, phone Ads – products – credit card, mailing address, phone numbernumber

– Does Does notnot go through information stored on your hard go through information stored on your hard drive. No passwords… no financial informationdrive. No passwords… no financial information

• Privacy riskPrivacy risk

– Some companies sell this information to Web Some companies sell this information to Web advertisers who use it to build huge databases.advertisers who use it to build huge databases.

108


Adware and Pop-UpsAdware and Pop-Ups

• Adware– Programs that download on your PC when you

install/use other software

– Enable sponsored ads to appear in your browser window or as pop-up

• Pop-ups can be eliminated Pop-ups can be eliminated – Pop-up blockers built into web browsersPop-up blockers built into web browsers– Anti-pop-up software like pop-up stopper @ Anti-pop-up software like pop-up stopper @

www.download.com 108


SpywareSpyware

• Unwanted program that is downloaded/ Unwanted program that is downloaded/ piggybacked on with a requested programpiggybacked on with a requested program

• Gathers information, usually about surfing Gathers information, usually about surfing habits to sell to marketershabits to sell to marketers

• More malicious - steal passwords, logins and More malicious - steal passwords, logins and credit card #s (malware)credit card #s (malware)

• Windows Vista comes with Window DefenderWindows Vista comes with Window Defender

• Free downloads Free downloads www.download.comSpybot


MalwareMalware

• Software that has a malicious intent Software that has a malicious intent

• Spyware is a form of malwareSpyware is a form of malware

• Other forms are viruses, worms, and Other forms are viruses, worms, and Trojan horsesTrojan horses

• Designed to render a computer useless or Designed to render a computer useless or penetrate it completelypenetrate it completely

110


Phishing “Fishing”Phishing “Fishing”and Hoaxesand Hoaxes

• Phishing Phishing – Phony communication that attempts to scam Phony communication that attempts to scam

someone into revealing personal informationsomeone into revealing personal information

– Never give out personal information when solicited on Never give out personal information when solicited on the computer or phonethe computer or phone

– Often looks very officialOften looks very official

• Hoaxes Hoaxes – Contain information that is untrue

– May request that people send moneyMay request that people send money– http://Hoaxbusters.ciac.org

111





Web BrowsersWeb Browsers

Enables us to search the webEnables us to search the web


Navigating the Web: Web BrowsersNavigating the Web: Web Browsers

• Computer softwareComputer software

• GraphicalGraphical

• Enables Web navigationEnables Web navigation

• Popular browsers:Popular browsers:– Internet ExplorerInternet Explorer– Mozilla’s FirefoxMozilla’s Firefox– Camino (Mac OS X)Camino (Mac OS X)

111


Uniform Resource Locator (URL)Uniform Resource Locator (URL)Web AddressWeb Address

Part of the Web Address Description

http Hypertext Transfer Protocol. A protocol is a set of rules for transferring data over the Internet.

:// Separates the protocol from the rest of the Web address.

www.firstgov.gov The domain name and extension.

.gov (government), .com (commercial), .edu (education), .org (organization), .net (network), .mil (military), and .mus (music). Most countries have their own domain types such as .ca for Canada and .fr for France 113

Domain name

Domain Type or

Extension


Current Top-Level DomainsCurrent Top-Level Domains

.aero .aero Members of the air transport industryMembers of the air transport industry

.biz .biz BusinessesBusinesses

.com .com Can be used by anyoneCan be used by anyone

.coop .coop Cooperative associationsCooperative associations

.edu .edu Degree granting institutionsDegree granting institutions

.gov.gov United States governmentUnited States government

.info .info Information service providersInformation service providers

.jobs.jobs Posting and recruiting job opportunities

.mil .mil United States militaryUnited States military

.museum .museum MuseumsMuseums

.name .name IndividualsIndividuals

.net .net Networking organizationsNetworking organizations

.org .org Organizations (often nonprofits)Organizations (often nonprofits)

.pro .pro Credentialed professionalsCredentialed professionals

..travel Travel-related services

113


Search EnginesSearch Engines

• User keys word or phrase in search boxUser keys word or phrase in search box• ““Spider” or “Web crawler” program scans Web Spider” or “Web crawler” program scans Web

pagespages• Results are indexed and sent to the clientResults are indexed and sent to the client

115


Biggest MistakesBiggest Mistakes

When using search engines…When using search engines…• Using 1 keywordUsing 1 keyword• Not putting the most important keyword firstNot putting the most important keyword first• Common words Common words notnot useful a, an, the, in, for, on, useful a, an, the, in, for, on,

into, however, probably, thisinto, however, probably, this• Not using the advance search pagesNot using the advance search pages• Spelling errorsSpelling errors

My notes


Meta Search EnginesMeta Search Engines

Meta search engineMeta search engine

• Queries Queries multiple search engines multiple search engines using keywords and using keywords and phrases phrases to search the webto search the web

• Searches the results of search enginesSearches the results of search engines

• Does not search the web itselfDoes not search the web itself

• Broad but Broad but not not deep resultsdeep results

Dogpile.com – mama.com – turbo10.comDogpile.com – mama.com – turbo10.com117 & My notes


Boolean OperatorsBoolean Operators• Boolean operators: Used to refine searches


Subject DirectoriesSubject Directories

• Web pages organized Web pages organized by topics and by topics and subtopicssubtopics

• Do not use keywords Do not use keywords to searchto search

• Narrow search by Narrow search by clicking on subfoldersclicking on subfolders

118


Evaluating Web SitesEvaluating Web Sites

• Who is the author of the article or Web site Who is the author of the article or Web site sponsor?sponsor?

• What audience is the site geared toward?What audience is the site geared toward?

• Is the site biased?Is the site biased?

• Is the information current?Is the information current?

• Are links available?Are links available?

119


Clients and ServersClients and Servers

• The Internet is a client/server network• Client computer:Client computer:

– Users connected to the InternetUsers connected to the Internet– Requests data and Web pagesRequests data and Web pages

• Server computer:Server computer:– Stores Web pages and dataStores Web pages and data– Returns the requested data to the clientReturns the requested data to the client

• IP addressesIP addresses


Connecting to the InternetConnecting to the Internet

• Dial-up connectionsDial-up connections

• Broadband connectionsBroadband connections– CableCable– SatelliteSatellite– DSLDSL


Dial-Up ConnectionsDial-Up Connections

• Uses standard Uses standard telephone linetelephone line

• Requires a modem Requires a modem to convert analog to convert analog and digital signalsand digital signals

• Slowest connection Slowest connection speed (56K)speed (56K)


Broadband ConnectionsBroadband Connections

• SatelliteSatellite– Uses a satellite dish and Uses a satellite dish and

coaxial cablecoaxial cable– Almost anyone in the

U.S. can receive satellite service

– Signal is affected by Signal is affected by location and weatherlocation and weather



• CableCable– Uses coaxial cable Uses coaxial cable

and a cable modemand a cable modem– Fast connection speed Fast connection speed – Speed depends on Speed depends on

number of usersnumber of users– Not available in all Not available in all

areasareas

Coaxial cable



• Digital Subscriber Line Digital Subscriber Line (DSL)(DSL)– Uses telephone linesUses telephone lines– Faster than dial-up Faster than dial-up – Doesn’t tie up lineDoesn’t tie up line– Requires special DSL Requires special DSL

modemmodem



• Fiber optic InternetFiber optic Internet– Sends light through fiber opticsSends light through fiber optics– FastFast– ExpensiveExpensive– Only available in certain areasOnly available in certain areas


Future of the InternetFuture of the Internet

• Large Scale Networking (LSN)Large Scale Networking (LSN)– Research and development of cutting-edge Research and development of cutting-edge

networking and wireless technologiesnetworking and wireless technologies

• Internet2Internet2– Project sponsored by universities, government, and Project sponsored by universities, government, and

industry to develop new Internet technologiesindustry to develop new Internet technologies– Internet2 backbone supports transmission speeds of Internet2 backbone supports transmission speeds of

9.6 Gbps9.6 Gbps


In-Class AssignmentIn-Class Assignment

• Get into Internet Communication groupGet into Internet Communication group

A.A.Instant Messaging, Weblog/Vlog, Podcasts, Instant Messaging, Weblog/Vlog, Podcasts, Webcasts,Webcasts,

B.B.Wikis, VOIP, E-mail, Group CommunicationWikis, VOIP, E-mail, Group Communication

1.1.DefineDefine

2.2.Positive/NegativePositive/Negative

3.3.Show how to get started/demonstrateShow how to get started/demonstrate

4.4.Show us something not found in the bookShow us something not found in the book



Comparing Internet Comparing Internet Connection OptionsConnection Options


Internet Service ProvidersInternet Service Providers• Provides user access to the Provides user access to the

InternetInternet• National, regional, or local National, regional, or local

companiescompanies• Broadband connection:

broadband provider is your ISP

• Dial-up connection: need to determine ISPs available in your area


The Origin of the InternetThe Origin of the Internet• ARPANETARPANET

– Advanced Research Projects Agency NetworkAdvanced Research Projects Agency Network– Funded by the U.S. government in the 1960sFunded by the U.S. government in the 1960s– Allowed computers at leading universities and Allowed computers at leading universities and

research organizations to communicate with research organizations to communicate with each other over great distanceseach other over great distances


Internet CommunicationsInternet Communications

• Group communicationGroup communication– Internet social network Internet social network – Multiplayer online game servicesMultiplayer online game services– Chat roomsChat rooms– NewsgroupsNewsgroups– ListservsListservs


Instant MessagingInstant Messaging

• Real-time text-Real-time text-based based conversationsconversations

• List of contacts: List of contacts: buddy listbuddy list

• Contacts must be Contacts must be onlineonline

• IM software detects IM software detects presence presence

• Example: AOL Example: AOL Instant MessengerInstant Messenger


PodcastsPodcasts

• Podcasts: Compressed audio/video files Podcasts: Compressed audio/video files distributed on the Internetdistributed on the Internet

• RSS (Really Simple Syndication) technology RSS (Really Simple Syndication) technology allows constant updates for subscribersallows constant updates for subscribers

• Podcasts are all over the Web Podcasts are all over the Web – Need “aggregator” software to gather podcastsNeed “aggregator” software to gather podcasts– Need media player software to play themNeed media player software to play them

• Simple to createSimple to create


Blogs and VlogsBlogs and Vlogs

• Weblogs: blogsWeblogs: blogs– Available to the publicAvailable to the public– Simple to create, read, and manageSimple to create, read, and manage– Entries listed on a single page with most Entries listed on a single page with most

recent entry at the toprecent entry at the top– SearchableSearchable

• Video blog: vlogVideo blog: vlog– Digital video clips playable on media player Digital video clips playable on media player

softwaresoftware


Webcasts and WikisWebcasts and Wikis

• Webcast: Broadcast of audio/visual Webcast: Broadcast of audio/visual content over the Internetcontent over the Internet– Not updated automaticallyNot updated automatically– Use Use streamingstreaming media media

• Wiki: Web site that allows anyone to Wiki: Web site that allows anyone to change its content change its content – provide source for collaborative writingprovide source for collaborative writing


Voice over Internet ProtocolVoice over Internet Protocol

• VoIP: Using the Internet to place phone callsVoIP: Using the Internet to place phone calls• Uses technology similar to Uses technology similar to e-mail to send e-mail to send voice voice

data digitally data digitally • Requires a microphone, an Internet connection, Requires a microphone, an Internet connection,

and a VoIP providerand a VoIP provider• Services differ:Services differ:

– Free services require an account on both endsFree services require an account on both ends– Paid services connect phone to computerPaid services connect phone to computer– Cable/DSL providers offer phone through broadbandCable/DSL providers offer phone through broadband– WiFi IP phones call through Internet hotspots and WiFi IP phones call through Internet hotspots and

wireless networkswireless networks


E-mailE-mail

• Electronic Electronic mailmail

• E-mail E-mail accountsaccounts– Client-basedClient-based– Web-basedWeb-based


Social NetworksSocial Networks

• Social networks: online personal networks– MySpace.com and Facebook.com

• Members share common interests

• Members communicate by voice, chat, IM, video, and blogs

• Members create personalized profiles

• Growth has been explosive

• Risks must be recognized and reduced


Multiplayer Online Game ServicesMultiplayer Online Game Services

• Multiplayer Online Games: play occurs over the Internet among many other players

• Persistent or ever-on game environment• Some games let you interact with other players


Chat RoomsChat Rooms

• Real-time text-based conversationsReal-time text-based conversations• Rooms focus on specific topics or interestsRooms focus on specific topics or interests• Identity protectionIdentity protection

– Username Username

• Netiquette: Rules of polite interactionNetiquette: Rules of polite interaction


Newsgroups and Listservs Newsgroups and Listservs

• NewsgroupsNewsgroups– Online discussion forumsOnline discussion forums– Members post and reply to messagesMembers post and reply to messages– Create or respond to “threads”Create or respond to “threads”

• ListservsListservs– Electronic mailing lists of e-mail addresses of

people interested in a topic – Threads are sent as e-mailsThreads are sent as e-mails– Less public than newsgroupsLess public than newsgroups



The Web vs. the InternetThe Web vs. the Internet

• The Web is part of the Internet The Web is part of the Internet distinguished by:distinguished by:– Communication protocols (TCP/IP) and Communication protocols (TCP/IP) and

languages (HTML)languages (HTML)– Special links (Special links (hyperlinkshyperlinks) )

• 1989: Web invented by Tim Berners-Lee1989: Web invented by Tim Berners-Lee• 1993: Mosaic browser 1993: Mosaic browser • 1994: Netscape: beginning of Web’s major 1994: Netscape: beginning of Web’s major

growthgrowth


Future of the InternetFuture of the Internet

• Web 2.0Web 2.0– Social networking sitesSocial networking sites– WikisWikis– PodcastsPodcasts– User content databases User content databases


• How can I communicate through the How can I communicate through the Internet Internet with IM, Weblogs, podcasts, VoIP, Webcasts, wikis, e-mail, chat, newsgroups, and listservs??

Chapter 3 Summary Questions Chapter 3 Summary Questions


• What are the various kinds of multimedia files found on the Web and what software do I need to use them?



• What is e-commerce, and what e-commerce safeguards protect me when I’m online?



• How do I manage online annoyances like spam, cookies, adware, spyware, malware, phishing, and Internet hoaxes?



• What is a Web browser?What is a Web browser?

Chapter 3 Summary QuestionsChapter 3 Summary Questions


• What is a URL, and what are its parts?What is a URL, and what are its parts?



• How can I use hyperlinks and other tools How can I use hyperlinks and other tools to get around the Web?to get around the Web?



• How do I search the Internet using search How do I search the Internet using search engines and subject directories?engines and subject directories?




• What are Boolean operators, and how do they help me search the Web more effectively?



• How do I evaluate a Web site? How do I evaluate a Web site?


• How does data travel on the Internet?How does data travel on the Internet?



• What are my options for connecting to the What are my options for connecting to the Internet?Internet?



• How do I choose an Internet service How do I choose an Internet service provider?provider?




• What is the origin of the Internet?What is the origin of the Internet?


• What will the Internet of the future look What will the Internet of the future look like?like?


Documents

© 2009 Prentice-Hall, Inc. 1. 2 Test on Wednesday Chapters 1, 2, 3 Multiple choice, True or FalseChapters 1, 2, 3 Multiple choice, True or False Team