CompTIA认证笔试（2018-2023年）真题摘选含答案

长风破浪会有时，直挂云帆济沧海。CompTIA认证笔试（2018-2023年）真题摘选含答案（图片大小可自由调整）卷I一.参考题库(共30题)1.WhichofthefollowingshouldbechangedtosecureaccesstoaWAPsconfigurationmanagementinterface?（）A、SSIDB、WPA2C、DHCPD、Password2.WhichofthefollowingtechnologieshastheHIGHESTpotentialthroughput?（）A、DSLB、FiberC、SatelliteD、Cable3.Which of the following RAID configurations provides the BEST performance for database fileswhile still providing redundancy？（）A、RAID 0B、RAID 1C、RAID 3D、RAID 54.Whichofthefollowingtechnologieswascreatedtoreducecost,increasecablelength,anduses3.3vacrosstheline?（）A、Wide-Ultra2SCSI-3B、High-VoltageDifferentialC、Low-VoltageDifferentialD、FibreChannel5.Whichofthefollowingisanexampleofahotswappablecomponentonalaptop?（）A、InternalwirelessadapterB、CPUC、PCMCIAcardD、RAM6.An administrator installs a new network card in a properly functioning DC. During the Windows bootup process the DC bluescreens. Which of the following is the NEXT step？（）A、 Press F8 and boot to Directory Services Restore Mode.B、 Press F8 and boot to Last Known Good Configuration.C、 Reboot the server again.D、 Press F8 and boot to Safe Mode.7.WhichofthefollowingisareasontoblockFTPatthecorporatefirewall?（）A、Itdoesnottransferencryptedfiles.B、ItcannotbetunneledinaVPN.C、Itisadeprecatedprotocol.D、Ittransmitspasswordsincleartext8.Which of the following allows users to recover their deleted files on file shares by themselves？（）A、Windows restoreB、Windows backupC、Shadow copiesD、Shadow backup9.WhenBob,atechnician,powersupadesktopPC,theunitwillrepeatthreeshortbeepsandwillnotPOST.WhichofthefollowingisMOSTlikelytheproblem?（）A、Thememoryisfailing.B、TheCPUisoverheating.C、Theharddriveisnotattachedproperly.D、Theoperatingsystemisnotinstalled.10.Which of the following would be considered a GFS backup solution？（）A、 Grouped， full， supplementalB、 Full， incremental， differentialC、 Yearly， monthly， dailyD、 Full， partial， differential11.Which of the following item colorizes the paper using a two-component laser printer？ （）A、tonerB、laser beamC、developerD、ribbon12.WhichofthefollowingwillcorrupttheBIOS?（）A、ApplyingtheBIOSsettingsintheincorrectorderB、PowerbeinglostduringtheupgradeprocessC、InstallingtheOSbeforeapplyingtheBIOSupgradeD、ImagingthesystemafterperformingaBIOSupgrade13.A technician receives a computer for repair and observes that the fan on the power supply is not moving. Which of the following should the technician do？ （）A、Move the power supply voltage switch to 220 volts.B、Add an additional fan to help cool the computer.C、Replace the cable that attaches the power supply to the motherboard.D、Replace the power supply.14.WhencomparingDSLbroadbandtocablebroadband,whichofthefollowingisanadvantageofDSLbroadband?（）A、UpgradedcopperlinesallowmaximumspeedgreaterthancableB、SignalisnotsharedbacktotheswitchC、SignalissharedbacktotheswitchD、Distanceisnotafactorinsignalspeed15.Whichofthefollowingnetworkmediatypesuseslaserlighttocarrytheinformation?（）A、IEEE1394B、STPC、RG-6D、Fiber16.WhichofthefollowingBESTdescribesRAID10?（）A、MirroringwithstripingB、MirroringwithfaulttoleranceC、StripingD、Stripingwithdistributedparity17.WhichofthefollowingcommandswouldbeusedtodisplaytheIPaddressonaUNIX/Linuxcomputer?（）A、netstatB、ipconfigC、ifconfigD、dig18.Which of the following keys are used to access advanced Windows start up options while a computer is booting？（）A、F8B、F6C、F5D、F219.Whichofthefollowingcommandsscansandverifiessystemprotectedfiles?（）A、VERIFYB、SFCC、CHKDSKD、CHKNTFS20.AtechnicianisinstallinganExpressCard54deviceintoalaptop.HowwillthedeviceMOSTlikelybeinstalled?（）A、IntoavailableexpansionslotB、ViaphysicalexternaldongleC、ViainternalexpansionslotD、IntoanyavailableUSBslot21.Which of the following memory technologies allows for single bit errors to be detected andsubsequently fixed？（）A、 RAIDB、 ECCC、 CASD、 SDRAM22.AuserhasforgottentheirBIOSpasswordontheircomputer.WhichofthefollowingwouldatechnicianusetoallowtheuseraccesstotheirPC?（）A、RemovetheBIOSchiponthePCB、Re-flashtheBIOSC、RunpasswordcrackingsoftwareontheusersPCD、Setthepasswordclearjumperonthemotherboard23.AtechnicianistestingapowersupplyforcorrectoutputvoltagesattheHDDpowerconnector. Whichofthefollowingvoltagesshouldthetechnicianexpectforacorrectlyworkingpowersupply?（）A、6VB、9VC、12VD、24V24.WhichofthefollowingLANtechnologiesisdefinedasfastEthernet?（）A、10Base-TB、100Base-TC、100Base-FXD、1000Base-T25.Whichofthefollowingcouldbedisabledtoimproveperformanceandresponse,inWindowsVista,onacomputerwithanoldervideocard?（）A、DesktopIconsB、AeroC、TaskManagerD、UAC26.Atechnicianispreparingusereducationtoraiseawarenessofmalware.Thetechnician’sgoalistoincreaseuserawarenessandpreventthefuturespreadofmalware.AllofthefollowingaremalwaresymptomsEXCEPT:（）A、increasednumberofpop-ups.B、decreasedvolumeofspam.C、decreasedsystemperformance.D、homepagehijacking.27.During a routine maintenance visit to a client， an administrator noticed that the last full backup didnot complete. Which of the following should the administrator do FIRST？（）A、Schedule and perform an incremental backup as soon as possible.B、Inspect backup report logs.C、Schedule and perform a full backup as soon as possible.D、Inspect alert notification settings.28.A user has a small network of four computers that they want to connect to a single cable modem. Which of the following devices would allow the user to do this？（）A、Four port switchB、Four port wireless routerC、Four port WAPD、Four port hub29.A company would like to dispose of old toner units. Which of the following would be the MOST appropriate course of action to take？（）A、Use an approved recycling program either through a vendor or local government agency.B、Old toner disposal is the responsibility of the manufacturer. Call the appropriate number at the respective company.C、Toss the units into the trash. Toner cartridges are biodegradable.D、Clean out the toner cartridges with warm water and place the clean units into the recycling collection.30.Which of the following BEST describes the difference between RAID 5 and RAID 6？（）A、 RAID 5 uses a dedicated parity drive and RAID 6 does not.B、 RAID 6 uses a dedicated parity drive and RAID 5 does not.C、 RAID 6 uses more parity drives than RAID 5.D、 RAID 5 uses more parity drives than RAID 6.卷I参考答案一.参考题库1.参考答案:D2.参考答案:B3.参考答案:D4.参考答案:C5.参考答案:C6.参考答案:B7.参考答案:D8.参考答案:C9.参考答案:A10.参考答案:C11.参考答案:A12.参考答案:B13.参考答案:D14.参考答案:B15.参考答案:D16.参考答案:A17.参考答案:C18.参考答案:A19.参考答案:B20.参考答案:A21.参考答案:B22.参考答案:D23.参考答案:C24.参考答案:B25.参考答案:B26.参考答案:B27.参考答案:B28.参考答案:B29.参考答案:A30.参考答案:C卷II一.参考题库(共30题)1.管理员刚刚为公司内网安装了一个web服务器。系统联机后，客户向管理员反映，他们无法连接服务器。管理员对工作站的web服务器进行测试，结果是可以访问网站。但客户仍然反映有该问题。以下哪项是导致这种情况的最可能原因？（）A、服务器防火墙配置错误。B、服务器超时功能设置错误。C、该web服务器安装不正确。D、公司防火墙配置错误。2.After a server has been installed into a rack， an administrator must ensure which of the following？（）A、Warm air flow is permitted through the front bezelB、The system is labeled so that it can be identifiedC、Verify the change control process can be implementedD、Determine the correct power requirements3.Which of the following can cause ghosting in a video image？（）A、Bent pin on an S-Video cableB、Mislabeled component cablesC、Defective HDMI cableD、Improperly terminated coax cable4.Anaturaldisasterhasoccurredandtheadministratormustreturnthenetworktoahealthystatus.Whichofthefollowingshouldtheadministratordointhiscase?（）A、Followtheemergencyactionplan.B、Waitforanissuetobereported.C、Establishanewbaseline.D、Determineifescalationisnecessary.5.WhentestingaCAT5cable,thetechniciannoticesthatpinAisopen.However,thecablestillworksfine.Whichofthefollowingdescribeshowthisispossible?（）A、Thecablewastestedfor100Base-TX.B、Thecableisa1000BaseTcable.C、Theswitchuseslinkaggregation,D、TheswitchwassetuptouseMDIX6.Auserstatesthattheyaretryingtoprojecttheirlaptoptoascreenforapresentation.Theyhavepluggedtheprojectorcableintotheirlaptop,andturnedtheprojectoron,butnosignalisfound.WhichofthefollowingshouldthetechnicianperformFIRST?（）A、EnsuretheprojectorisreceivingpowerB、VerifythelaptopisnotrunningonbatteryC、TogglethefunctionkeyfordisplaysD、Replacetheprojectorcablewithanother7.Which of the following should an administrator utilize to deploy service packs to new servers？（）A、A RAS serverB、A RIS serverC、Patch management systemD、PXE boot environment8.WhichofthefollowingbottleneckswouldMOSTlikelycauseexcessiveharddriveactivity?（）A、InadequateRAMB、SlowprocessorC、PCIbusD、Excessivenetworktraffic9.Atechnicianneedstoconfigureacomputerwithanexternalstoragedrive.WhichofthefollowinginterfaceswouldprovidetheFASTESTthroughput?（）A、USB2.0B、eSATAC、CAT5D、FireWire10.Whichofthefollowingmethodscanbeusedtoapplyafilesystemtoaharddrivepartition?（）A、DeviceManagerMMCB、FormatCommandC、DiskManagementMMCD、WindowsExplorerMenusE、FDISKCommand11.IfatechnicianistravelingoutsideoftheUS,whichofthefollowingshouldbecheckedbeforesettingupaworkstation?（）A、LocalfileformatB、WattagesettingC、LocalpowercodesD、Voltagesetting12.Whichofthefollowingisamultimediadevice?（）A、BiometricdeviceB、MouseC、CamcorderD、Infraredscanner13.RAID5canbeBESTdescribedaswhichofthefollowing?（）A、MirroringwithstripingB、StripingwithdedicatedparityC、StripingwithdistributedparityD、Independentdiskswithsharedparity14.A user connects to the companys intranet server via a VPN connection from a small office / home office （SOHO） using the broadband service. One day， the user cannot successfully connect to the VPN and receives an error message that states "Username and password are invalid on the domain." Which of the following should be done to correct this problem？（）A、Call the corporate help desk to have the VPN server rebootedB、Re-enter the username and password in the VPN connection and reconnectC、Call the broadband Internet provider to replace the SOHO router with a newer modelD、Ping the corporate VPN server to ensure it is online15.WhichofthefollowinghastheHIGHESTconnectionlatency?（）A、SatelliteB、CableC、DSLD、Dial-up16.SMPisconsideredtobeaformof（）.A、mailprotocol.B、monitoringprotocol.C、mappedprinter.D、multi-processing.17.Atechnicianneedstomanageaswitchbyusingthemanagementportonthebackoftheswitch.Whichofthefollowingcableswouldthetechnicianuse?（）A、StraightB、ConsoleC、CrossoverD、Loopback18.AuserhasbeenhavingdifficultywiththeirPC.WhichofthefollowingistheBESTresponseatechnicianshouldgivewhenauserasksforthedefinitionofaparticularbluescreenmessage?（）A、“Itisamessagethatinformsthetechnicianofwhathardwareneedstobereplaced.”B、“Abluescreenmessageisjustanothernameforanerror.”C、“Itprovidesthetechnicianwithmoreinformationabouttheproblem.”D、“Itisacomplexmessagethatisverydifficulttoexplaintothosewhoarenotfamiliarwithcomputers.”19.Howmanyvoltsdoesapowersupply’s4-pinMolexconnectorcarrytointernaldevices?（）A、2.5voltsB、5voltsC、6voltsD、15volts20.Jill,atechnician,isinstallingseveralPCsinahomethatispre-wiredwithEthernettosevenrooms.InthewiringclosetalltheEthernetcablesarehangingfreeandarenotlabeled. Whichofthefollowingtoolswouldthetechnicianusetolocatethecablethatrunstoeachroom?（）A、ExtensionmagnetB、TonerprobeC、MultimeterD、OpticalTimeDomainReflectometer(OTDR)21.A company backs up their data using daily， weekly， and monthly tape backups. The weeklybackups are also known as which of the following？（）A、SonB、FatherC、GrandfatherD、Great-grandfather22.AllofthefollowingarecontainedinaserverbaselinedocumentEXCEPT（）.A、numberofusers.B、numberoffiles.C、memoryusage.D、averagediskI/O.23.Which of the following are types of files downloaded during an Automatic Update？ （）A、critical updatesB、software updatesC、driver updatesD、virus definition updates24.A user selects their proper domain and is unable to log into their Windows computer. The errorstates： System cannot log you on to the domain because the systems computer account in its primarydomain is missing or the password on that account is incorrect.  Which of the following is the MOSTlikely cause for this error？（）A、 The computers account was removed from Active Directory.B、 The users account was removed from Active Directory.C、 The computer was disjoined from the domain.D、 The user typed in the wrong password.25.Auserstatesthatanetworkedprinterisnotworkingtoday,butyesterdaytheprinterworkedfine.Thetechniciancheckstheuser’sprintqueueandseesseveraljobsinthequeue.Thequeueisflushed,restarted,andtheuserisstillhavingthesameissue. WhichofthefollowingshouldbeverifiedNEXTontheprinter?（）A、ThattheWEPkeyisdisabledB、ThatthefuserisnotfaultyC、ThattheIPis