Chapter 02. Internet
-
Upload
maarif-a-syafii -
Category
Documents
-
view
218 -
download
1
description
Transcript of Chapter 02. 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