计算机导论课后习题答案

1计算机导论课后习题答案KeyToChapterReview(Chapter1)CrosswordPuzzleAnswers:AcrossNum.ClueAnswer1Themostessentialpartofaninformationsystem.People7Coordinatescomputerresources.OperatingSystem10Modifiessignalsforprocessing.Modem12Datathathasbeenprocessedbythecomputer.Information13Unprocessedfacts.Data14Notebookcomputerthatacceptshandwritteninput..TabletPCDownNum.ClueAnswer2Usescomputerstobecomemoreproductive.EndUser3Rulesorguidelinestofollowwhenusingsoftware,hardware,anddata.Procedures4Createdbywordprocessors.DocumentFiles5Specializedprogramsthatallowinputandoutputdevicestocommunicate.DeviceDrivers6Createdbydatabasemanagementprograms.DatabaseFiles8Thephysicalequipmentofamicrocomputer.Hardware9Theworld’slargestcomputernetwork.Internet13Providesstep-by-stepinstructionstothecomputer.SoftwareNumMultipleChoiceAnswersMatchingAnswers1BE2BF3AI4BH25DA6DC7AG8CB9DD10DJOpenEndedQuestions:11.Explainthefivepartsofaninformationsystem.Whatpartdopeopleplayinthissystem?a.People:makingpeople,orendusersmoreproductive.Procedures:Therulesorguidelinesforpeopletofollowwhenusingsoftware,hardware,anddataareprocedures.Software:Aprogramconsistsofthestep-by-stepinstructionsthattellthecomputerhowtodoitswork.Thepurposeofsoftwareistoconvertdata(unprocessedfacts)intoinformation(processedfacts).Hardware:Theequipmentthatprocessesthedatatocreateinformationiscalledhardware.Data:Theraw,unprocessedfacts,includingtext,numbers,images,andsounds,arecalleddata.b.Peoplearesurelythemostimportantpartofanyinformationsystem.Ourlivesaretouchedeverydaybycomputersandinformationsystems.312.Whatissystemsoftware?Whatkindsofprogramsareincludedinsystemsoftware?c.Systemsoftwareenablestheapplicationsoftwaretointeractwiththecomputerhardware.Systemsoftwareis“background”softwarethathelpsthecomputermanageitsowninternalresources.d.Itconsistsofoperatingsystems,utilities,anddevicedrivers.13.Defineandcomparebasicandspecializedapplicationsoftware.Describesomedifferenttypesofbasicapplications.Describesometypesofspecializedapplications.e.Basicapplications,orgeneral-purposeapplications,arewidelyusedinnearlyallcareerareas.Theyarethekindsofprogramsyouhavetoknowtobeconsideredcomputercompetent.Oneofthesebasicapplicationsisabrowsertonavigate,explore,andfindinformationontheInternet.f.Specializedapplications,alsoknownasspecial-purposeapplications,includethousandsofotherprogramsthataremorenarrowlyfocusedonspecificdisciplinesandoccupations.Someofthebestknownaregraphics,audio,video,multimedia,Webauthoring,andartificialintelligenceprograms.414.Describethedifferenttypesofcomputers.Whatisthemostcommontype?Whatarethetypesofmicrocomputers?g.Therearefourtypesofcomputers:supercomputers,mainframe,computers,minicomputers,andmicrocomputers.h.Microcomputersarethemostwidelyusedandfastest-growing,typeofcomputer.(10)i.Therearefourtypesofmicrocomputers:desktop,notebook,tabletPC,andhandheldcomputers.15.Whatisconnectivity?Howarethewirelessrevolutionandconnectivityrelated?Whatisacomputernetwork?WhatistheInternet?WhatistheWeb?j.Connectivityisthecapabilityofyourmicrocomputertoshareinformationwithothercomputers.k.Thesinglemostdramaticchangeinconnectivityinthepastfiveyearshasbeenthewidespreaduseofmobileorwirelesscommunicationdevices.Thesewirelessapplicationsarejustthebeginningofthewirelessrevolution,arevolutionthatisexpectedtodramaticallyaffectthewaywecommunicateandusecomputertechnology.l.Acomputernetworkisacommunicationssystemconnectingtwoormorecomputers.m.ThelargestnetworkintheworldistheInternet.Itislikeagianthighwaythatconnectsyoutomillionsofotherpeopleandorganizationslocatedthroughouttheworld.5TheWeb,alsoknownastheWorldWideWebor(Chapter2)CrosswordPuzzleAnswers:AcrossNum.ClueAnswer2ProvideusersaconnectiontotheInternet.ISP3Unwelcomee-mail.Spam5ExploretheWeb.Surf7Internetuploadinganddownloadingservice.FTP8Stealscreditcardinformation.Carder9Afile,suchasadocumentorworksheet,thatisattachedtoane-mailmessage.Attachment10Involvesthesaleofaproducttoanotherbusiness.B2B13ConnectiontoWebresources.Link15Processoftransferringinformationfromaremotecomputertothecomputeroneisusing.DownloadDownNum.ClueAnswer1Thesitesthatasearchenginereturnsafterrunningakeywordsearch.Hits4SpecialprogramwritteninJava.Applet5Locatesinformationonline.SearchEngine6LocationofWebresource.URL11ProgramthatprovidesaccesstoWebBrowser12Usedtoblockcertainsites.Filter14Provideshigh-speedconnectionusingexistingtelephonelines.DSL6NumMultipleChoiceAnswersMatchingAnswers1di2ad3cg4ce5af6ac7ah8aj9da10bbOpenEndedQuestions:11.DiscusstheusesoftheInternet.Whichactivitieshaveyouparticipatedin?Whichonedoyouthinkisthemostpopular?SomeoftheusesoftheInternetarecommunicating,shopping,searching,entertainment,andeducation.Someactivitiesofcommunicatingaree-mailing,instantmessaging,anddiscussiongroups.Someactivitiesofentertainmentaremusic,movies,andcomputergames.Otheractivitiestoparticipateinareshopping,doingresearchonline,andusingonlineperiodicals.Themostpopulariscommunicating.12.Explainthediff