Your Interactive Guide to the Digital World Discovering Computers 2012 Chapter 2 Fundamentals of the World Wide Web and Internet
Your Interactive Guide to the Digital World
Discovering Computers 2012
Chapter 2Fundamentals of the World Wide Web and Internet
ObjectivesOverview
DiscusstheevolutionoftheInternet
IdentifyandbrieflydescribevariousbroadbandInternet
connectionsandstatedifferencesbetweenbroadbandInternetconnectionsanddial
upconnections
DescribethetypesofInternetaccessproviders
DescribethepurposeofanIPaddressanditsrelationshiptoa
domainname
ExplainthepurposeofaWebbrowserandidentifythe
componentsofaWebaddress
Describehowtouseasearchenginetosearchfor
informationontheWebanddifferentiatebetweenasearchengineandasubjectdirectory
DiscoveringComputers2012:Chapter2 2SeePage73forDetailedObjectives
ObjectivesOverview
DescribethetypesofWebsites
ExplainhowWebpagesusegraphics,animation,audio,video,virtualreality,and
plugins
IdentifyandbrieflydescribethestepsrequiredforWeb
publishing
Describethetypesofecommerce
Explainhowemail,mailinglists,instantmessaging,
chatrooms,VoIP,newsgroupsandmessageboards,andFTPwork
Identifytherulesofnetiquette
DiscoveringComputers2012:Chapter2 3SeePage73forDetailedObjectives
TheInternet
TheInternet isaworldwidecollectionofnetworksthatlinksmillionsofbusinesses,governmentagencies,educationalinstitutions,andindividuals
DiscoveringComputers2012:Chapter2 4Page74Figure21
EvolutionoftheInternet
TheInternetoriginatedasARPANETinSeptember1969andhadtwomaingoals:
DiscoveringComputers2012:Chapter2 5Page75
Allowscientistsatdifferentphysicallocationstoshare
informationandworktogether
Functionevenifpartofthenetworkwere
disabledordestroyedbyadisaster
EvolutionoftheInternet
1969ARPANETbecomesfunctional
1984ARPANEThasmorethan1,000
individualcomputerslinkedashosts
1986 NSFconnectsNSFnet to
ARPANETandbecomes
knownastheInternet
1995 NSFNetterminatesitsnetworkonthe
Internetandresumesstatusasresearchnetwork
1996Internet2isfounded
TodayMorethan550
millionhostsconnecttotheInternet
DiscoveringComputers2012:Chapter2 6Pages75 76
EvolutionoftheInternet
Eachorganizationisresponsibleonlyformaintainingitsownnetwork TheWorldWideWebConsortium(W3C)overseesresearchandsetsguidelinesandstandards
Internet2connectsmorethan200universitiesand115companiesviaahighspeedprivatenetwork
DiscoveringComputers2012:Chapter2 7Page76
EvolutionoftheInternet
ManyhomeandsmallbusinessusersconnecttotheInternetviahighspeedbroadbandInternetservice
DiscoveringComputers2012:Chapter2 8Page76
CableInternetservice
DSL
Fibertothe
Premises(FTTP)
Fixedwireless
CellularRadio
NetworkWiFi
SatelliteInternetService
EvolutionoftheInternet
Anaccessprovider isabusinessthatprovidesindividualsandorganizationsaccesstotheInternetfreeorforafee
DiscoveringComputers2012:Chapter2 9Page77Figure22
EvolutionoftheInternet
ISP (Internetservice provider)
RegionalISPsprovideInternet
accesstoaspecificgeographicalarea
NationalISPsprovideInternet
accessincitiesandtownsnationwide
Onlineserviceprovider(OSP)
Hasmanymembersonlyfeatures
PopularOSPsincludeAOL(America
Online)andMSN(MicrosoftNetwork)
WirelessInternetserviceprovider
ProvideswirelessInternetaccesstocomputersandmobiledevices
Mayrequireawirelessmodem
DiscoveringComputers2012:Chapter2 10Page78
EvolutionoftheInternet
DiscoveringComputers2012:Chapter2 11Page79Figure23
EvolutionoftheInternet
AnIPaddress isanumberthatuniquelyidentifieseachcomputerordeviceconnectedtotheInternet
Adomainname isthetextversionofanIPaddress Topleveldomain(TLD)
ADNSserver translatesthedomainnameintoitsassociatedIPaddress
DiscoveringComputers2012:Chapter2 12Pages79 80Figure24
EvolutionoftheInternet
DiscoveringComputers2012:Chapter2 13Page80Figure25
TheWorldWideWeb
TheWorldWideWeb,orWeb,consistsofaworldwidecollectionofelectronicdocuments(Webpages)
AWebsite isacollectionofrelatedWebpagesandassociateditems
AWebserver isacomputerthatdeliversrequestedWebpagestoyourcomputer
Web2.0 referstoWebsitesthatprovideameansforuserstointeract
DiscoveringComputers2012:Chapter2 14Pages80 81
TheWorldWideWeb
AWebbrowser,orbrowser,allowsuserstoaccessWebpagesandWeb2.0programs
DiscoveringComputers2012:Chapter2 15Page81
InternetExplorer Firefox Opera
Safari GoogleChrome
TheWorldWideWeb
DiscoveringComputers2012:Chapter2 16Page81Figure26
TheWorldWideWeb
AhomepageisthefirstpagethataWebsitedisplays
Webpagesprovidelinks tootherrelatedWebpages SurfingtheWeb
Downloading istheprocessofreceivinginformation
DiscoveringComputers2012:Chapter2 17Pages82 83Figure27
SomeWebpagesaredesignedspecificallyformicrobrowsers
TheWorldWideWeb
AWebpagehasauniqueaddresscalledaURL orWebaddress
DiscoveringComputers2012:Chapter2 18Pages82 83Figure28
TheWorldWideWeb
Tabbedbrowsing allowsyoutoopenandviewmultipleWebpagesinasingleWebbrowserwindow
DiscoveringComputers2012:Chapter2 19Page84Figure29
TheWorldWideWeb
Twotypesofsearchtoolsaresearchenginesandsubjectdirectories
DiscoveringComputers2012:Chapter2 20Page85
Searchengine
Findsinformationrelatedtoaspecifictopic
Subjectdirectory
ClassifiesWebpagesinan
organizedsetofcategories
TheWorldWideWeb
DiscoveringComputers2012:Chapter2 21Page85Figure210
TheWorldWideWeb
Asearchengineishelpfulinlocatingitemssuchas:
DiscoveringComputers2012:Chapter2 22Page85
Images Videos Audio Publications
Maps PeopleorBusinesses Blogs
TheWorldWideWeb
DiscoveringComputers2012:Chapter2 23Page86Figure211
TheWorldWideWeb
SomeWebbrowserscontainanInstantSearchboxtoeliminatethestepsofdisplayingthesearchenginesWebpagepriortoenteringthesearchtext
DiscoveringComputers2012:Chapter2 24Page87Figure212
TheWorldWideWeb
Searchoperatorscanhelptorefineyoursearch
DiscoveringComputers2012:Chapter2 25Page87Figure213
TheWorldWideWeb
TherearethirteentypesofWebsites
DiscoveringComputers2012:Chapter2 26Pages88 91Figure215
Portal News Informational Business/Marketing
Blog Wiki OnlineSocialNetwork
Educational
TheWorldWideWeb
Entertainment Advocacy WebApplication
ContentAggregator
Personal
DiscoveringComputers2012:Chapter2 27Pages91 92Figure215
Video:TellYourStoriesviaVlog
DiscoveringComputers2012:Chapter2 28
CLICKTOSTART
TheWorldWideWeb
InformationpresentedontheWebmustbeevaluatedforaccuracy
NooneoverseesthecontentofWebpages
DiscoveringComputers2012:Chapter2 29Page92Figure216
TheWorldWideWeb
Multimedia referstoanyapplicationthatcombinestextwith:
DiscoveringComputers2012:Chapter2 30Page92
TheWorldWideWeb
Agraphic isadigitalrepresentationofnontext information
GraphicformatsincludeBMP,GIF,JPEG,PNG,andTIFF
DiscoveringComputers2012:Chapter2 31Page93Figure217
TheWorldWideWeb
Athumbnailisasmallversionofalargergraphic
DiscoveringComputers2012:Chapter2 32Page94Figure219
TheWorldWideWeb
Animation istheappearanceofmotioncreatedbydisplayingaseriesofstillimagesinsequence
DiscoveringComputers2012:Chapter2 33Page94
TheWorldWideWeb
Audio includesmusic,speech,oranyothersound Compressedtoreducefilesize
Youlistentoaudioonyourcomputerusingaplayer Streaming istheprocessoftransferringdatainacontinuousandevenflow
DiscoveringComputers2012:Chapter2 34Pages94 95Figure220
TheWorldWideWeb
DiscoveringComputers2012:Chapter2 35Page95Figure221
TheWorldWideWeb
Video consistsofimagesdisplayedinmotion
DiscoveringComputers2012:Chapter2 36Page96Figure222
TheWorldWideWeb
Virtualreality (VR)istheuseofcomputerstosimulatearealorimaginedenvironmentthatappearsasathreedimensionalspace
DiscoveringComputers2012:Chapter2 37Pages96 97Figure223
TheWorldWideWeb
Aplugin isaprogramthatextendsthecapabilityofaWebbrowser
DiscoveringComputers2012:Chapter2 38Page97Figure224
TheWorldWideWeb
Webpublishing isthedevelopmentandmaintenanceofWebpages
DiscoveringComputers2012:Chapter2 39Page98
PlanaWebsite
Analyzeand
designaWebsite
CreateaWebsite
DeployaWebsite
MaintainaWebsite
ECommerce
Ecommerce isabusinesstransactionthatoccursoveranelectronicnetwork Mcommerce identifiesecommercethattakesplaceusingmobiledevices
DiscoveringComputers2012:Chapter2 40Page98
ECommerce
DiscoveringComputers2012:Chapter2 41Pages98 99
Ecommerce
Businessto
consumer(B2C)
Consumerto
consumer(C2C)
Businessto
business(B2B)
ECommerce
DiscoveringComputers2012:Chapter2 42Page99Figure225
OtherInternetServices
Email isthetransmissionofmessagesandfilesviaacomputernetwork
Anemailprogramallowsyoutocreate,send,receive,forward,store,print,anddeleteemailmessages
DiscoveringComputers2012:Chapter2 43Page101Figure226
OtherInternetServices
DiscoveringComputers2012:Chapter2 44Page102Figure227
OtherInternetServices
Amailinglist isagroupofemailnamesandaddressesgivenasinglename Subscribing addsyouremailnameandaddress Unsubscribing removesyourname
DiscoveringComputers2012:Chapter2 45Page103Figure228
OtherInternetServices
Instantmessaging(IM)isarealtime Internetcommunicationsservice
DiscoveringComputers2012:Chapter2 46Page104Figure229
OtherInternetServices
Achat isarealtimetypedconversationthattakesplaceonacomputer
Achatroom isalocationonanInternetserverthatpermitsuserstochatwitheachother
DiscoveringComputers2012:Chapter2 47Page105Figure230
OtherInternetServices
VoIP (VoiceoverIP)enablesuserstospeaktootherusersovertheInternet AlsocalledInternettelephony
DiscoveringComputers2012:Chapter2 48Page106Figure231
OtherInternetServices
Anewsgroup isanonlineareainwhichusershavewrittendiscussionsaboutaparticularsubject Typicallyrequiresanewsreader
Amessageboard isaWebbasedtypeofdiscussiongroup
DiscoveringComputers2012:Chapter2 49Page107Figure232
OtherInternetServices
FTP (FileTransferProtocol)isanInternetstandardthatpermitsfileuploading anddownloadingwithothercomputersontheInternet
ManyoperatingsystemsincludeFTPcapabilities AnFTPserverisacomputerthatallowsuserstouploadand/ordownloadfilesusingFTP
DiscoveringComputers2012:Chapter2 50Page107
Netiquette
Netiquette isthecodeofacceptableInternetbehavior
DiscoveringComputers2012:Chapter2 51Page108Figure233
Summary
HistoryandstructureoftheInternet WorldWideWeb
Browsing,navigating,searching,Webpublishing,andecommerce
OtherInternetservices:email,instant
messaging,chatrooms,VoIP,newsgroupsand
messageboards,andFTP
Rulesofnetiquette
DiscoveringComputers2012:Chapter2 52Page109
Your Interactive Guide to the Digital World
Discovering Computers 2012
Chapter 2Fundamentals of the World Wide Web and Internet
Chapter2Complete