计算机英语试题3及答案

计算机英语试题3及答案

一、单项选择题（每题2分，共10题）1.Theabbreviation“CPU”standsfor_.A.CentralProcessingUnitB.ComputerProcessUnitC.ControlProcessingUnit答案：A2.Whichofthefollowingisastoragedevice?A.MonitorB.KeyboardC.Harddisk答案：C3.“LAN”refersto_.A.LargeAreaNetworkB.LocalAreaNetworkC.LongitudeAreaNetwork答案：B4.Incomputerterms,“bit”means_.A.BinarydigitB.ByteinformationC.Basicinteger答案：A5.Thesoftwarethatcontrolsthebasicoperationsofacomputeriscalled_.A.ApplicationsoftwareB.SystemsoftwareC.Utilitysoftware答案：B6.Whichofthefollowingisaninputdevice?A.PrinterB.MouseC.Speaker答案：B7.“RAM”is_.A.Read-OnlyMemoryB.RandomAccessMemoryC.RemoteAccessMemory答案：B8.Aprogramthathelpsusersperformaspecifictaskis_.A.SystemsoftwareB.ApplicationsoftwareC.Operatingsystem答案：B9.Themaincircuitboardinacomputeris_.A.MotherboardB.DaughterboardC.Fatherboard答案：A10.“Firewall”incomputersecurityisusedto_.A.PreventunauthorizedaccessB.SpeedupdatatransferC.Increasestoragecapacity答案：A二、多项选择题（每题2分，共10题）1.Whichofthefollowingareoperatingsystems?A.WindowsB.LinuxC.MacOSD.Photoshop答案：ABC2.Componentsofacomputersystemmayinclude_.A.HardwareB.SoftwareC.DataD.User答案：ABC3.Inputdevicescanbe_.A.ScannerB.MicrophoneC.JoystickD.Plotter答案：ABC4.Whichofthefollowingareoutputdevices?A.MonitorB.PrinterC.ProjectorD.CD-ROMdrive答案：ABC5.Storagedevicesinacomputercanbe_.A.FlashdriveB.DVDC.MagnetictapeD.Cache答案：ABC6.Incomputernetworking,commonnetworktopologiesare_.A.StarB.BusC.RingD.Square答案：ABC7.Thefunctionsofanoperatingsystemmayinclude_.A.MemorymanagementB.ProcessmanagementC.FilemanagementD.Usermanagement答案：ABCD8.Whichofthefollowingareprogramminglanguages?A.C++B.JavaC.PythonD.Excel答案：ABC9.Computersecuritythreatscanbe_.A.VirusesB.HackersC.MalwareD.Firewalls答案：ABC10.Characteristicsofagoodsoftwaremayinclude_.A.ReliabilityB.UsabilityC.EfficiencyD.Complexity答案：ABC三、判断题（每题2分，共10题）1.Abyteconsistsof8bits.(True)2.Theprinterisaninputdevice.(False)3.Windowsistheonlyoperatingsystemavailable.(False)4.Cacheisatypeofpermanentstorage.(False)5.Acomputerviruscanonlydamagesoftware,nothardware.(False)6.Javacanbeusedtodevelopwebapplications.(True)7.Themotherboardisnotanimportantpartofacomputer.(False)8.AllsoftwareneedstobeinstalledfromaCD-ROM.(False)9.ALANisusuallysmallerinscalethanaWAN.(True)10.Systemsoftwareisusedtodirectlyperformuser-specifictasks.(False)四、简答题（每题5分，共4题）1.Brieflyexplainwhatisacomputervirus.Answer:Acomputervirusisamalicioussoftwareprogram.Itcanreplicateitselfandspreadfromonecomputertoanother.Itmaydamagedata,softwareordisruptcomputeroperations.2.Whatarethemainfunctionsofanoperatingsystem?Answer:Mainfunctionsincludememorymanagement,processmanagement,filemanagementandusermanagement.Italsoprovidesaninterfacebetweentheuserandthecomputerhardware.3.Nametwotypesofprogramminglanguagesandtheircharacteristics.Answer:Java:Itisobject-oriented,platform-independent.Python:Itiseasytolearn,hasasimplesyntaxandiswidelyusedindataanalysisandartificialintelligence.4.WhatisthedifferencebetweenRAMandROM?Answer:RAMisRandomAccessMemory,itisvolatileandcanbereadandwritten.ROMisRead-OnlyMemory,itisnon-volatileandusuallycontainspermanentdataandinstructions.五、讨论题（每题5分，共4题）1.Discusstheimportanceofcomputersecurity.Answer:Computersecurityiscrucial.Itprotectsdatafromunauthorizedaccess,virusesandhackers.Ensurestheintegrityandavailabilityofcomputersystemsforbothindividualsandorganizations.2.Whyissoftwareusabilityimportant?Answer:Usabilityisimportantasitdetermineshoweasilyuserscaninteractwiththesoftware.Goodusabilitymeanslesstrainingtime,higherusersatisfactionandincreasedproductivity.3.Howhasnetworkingchangedthewayweusecomputers?Answer:Networkingallowscomputerstoshareresources,communicateandaccessinformationglobally.Itenablesonlineservices,remotewor