CCAH测试题-v20160107-release

ClouderaCCAH测试题1CCAH认证考试简介2CCAH测试试题目录CCAH：ClouderaCertifiedAdministratorforApacheHadoop考试范围›HDFS:(17%)›YARNandMapReduceVersion:(17%)›HadoopClusterPlanning:(16%)›HadoopClusterInstallationandAdministration:(25%)›ResourceManagement:(10%)›MonitoringandLogging:(15%)CCAH：ClouderaCertifiedAdministratorforApacheHadoop考试范围›HDFS:(17%)›YARNandMapReduceVersion:(17%)›HadoopClusterPlanning:(16%)›HadoopClusterInstallationandAdministration:(25%)›ResourceManagement:(10%)›MonitoringandLogging:(15%)CCAH：ClouderaCertifiedAdministratorforApacheHadoop考试事项›ClouderaCertifiedAdministratorforApacheHadoopCCAH–IndividualswhoachieveClouderaCertifiedAdministratorforApacheHadoop(CCAH)accreditationhavedemonstratedtheirtechnicalknowledge,skill,andabilitytoconfigure,deploy,maintain,andsecureanApacheHadoopcluster.›CCA-500:CDH5ExamAudience:AdministratorswhowanttocertifyonCDH5ExamCode:CCA-500NumberofQuestions:60questionsTimeLimit:90minutesPassingScore:70%Language:English,Japanese(forthcoming)Price:USD$295,AUD$300,EUR€215,GBP£185,JPY¥28,500Difficulty–Theexampatternissetinsuchawaythatitfocusesondemonstratingthecandidate’stechnicalknowledge,skill,andabilitytoconfigure,deploy,maintainandsecureanApacheHadoopclusterandtheecosystemprojectsthatcomprisetheEnterpriseDataHub.CCAH：ClouderaCertifiedAdministratorforApacheHadoop考试事项›CCA-505:CDH5UpgradeExamAudience:ClouderaCertifiedAdministratorswhowanttoupgradetheircertificationfromapreviousversionofCDHtoCDH5ExamCode:CCA-505NumberofQuestions:45questionsTimeLimit:90minutesPassingScore:70%Language:English,Japanese(forthcoming)Price:USD$125›Difficulty–ThepatternforCCAHandCDH5remainsthesameforboth.Also,notethattheHadoopecosystemitemsarenolongertreatedseparatelyastheirownsectionbutareintegratedthroughouttheexam.BothCCA–500andCCA–505sharethesameproportionofitemspersection.1CCAH认证考试简介2CCAH测试试题目录CCAH(CCA-500)认证考试试题-1考点：WhatdoesCDHpackagingdooninstalltofacilitateKerberossecuritysetup?A.Automaticallyconfigurespermissionsforlogfilesat&MAPRED_LOG_DIR/userlogsB.CreatesusersforhdfsandmapreducetofacilitateroleassignmentC.Createsdirectoriesfortemp,hdfs,andmapreducewiththecorrectpermissionsD.Createsasetofpre-configuredKerberoskeytabfilesandtheirpermissionsE.CreatesandconfiguresyourkdcwithdefaultclustervaluesQuestion：正确答案：BCCAH(CCA-500)认证考试试题-2考点：WhichisthedefaultschedulerinYARN?A.YARNdoesn'tconfigureadefaultscheduler,youmustfirstassignanappropriateschedulerclassinyarn-site.xmlB.CapacitySchedulerC.FairSchedulerD.FIFOSchedulerQuestion：正确答案：B解释说明：(CCA-500)认证考试试题-3考点：WhichYARNprocessrunascontainer0ofasubmittedjobandisresponsibleforresourceqrequests?A.ApplicationManagerB.JobTrackerC.ApplicationMasterD.JobHistoryServerE.ResoureManagerF.NodeManagerQuestion：正确答案：CCCAH(CCA-500)认证考试试题-4考点：Whichschedulerwouldyoudeploytoensurethatyourclusterallowsshortjobstofinishwithinareasonabletimewithoutstartinglong-runningjobs?A.ComplexityFairScheduler(CFS)B.CapacitySchedulerC.FairSchedulerD.FIFOSchedulerQuestion：正确答案：C解释说明：(CCA-500)认证考试试题-5考点：YourclusterisconfiguredwithHDFSandMapReduceversion2(MRv2)onYARN.Whatistheresultwhenyouexecute:hadoopjarSampleJarMyClassonaclientmachine?A.SampleJar.JarissenttotheApplicationMasterwhichallocatesacontainerforSampleJar.JarB.Sample.jarisplacedinatemporarydirectoryinHDFSC.SampleJar.jarissentdirectlytotheResourceManagerD.SampleJar.jarisserializedintoanXMLfilewhichissubmittedtotheApplicatoionMasterQuestion：正确答案：BCCAH(CCA-500)认证考试试题-6考点：YouareworkingonaprojectwhereyouneedtochaintogetherMapReduce,Pigjobs.Youalsoneedtheabilitytouseforks,decisionpoints,andpathjoins.Whichecosystemprojectshouldyouusetoperformtheseactions?A.OozieB.ZooKeeperC.HBaseD.SqoopE.HUEQuestion：正确答案：ACCAH(CCA-500)认证考试试题-7考点：Whichprocessinstantiatesusercode,andexecutesmapandreducetasksonaclusterrunningMapReducev2(MRv2)onYARN?A.NodeManagerB.ApplicationMasterC.TaskTrackerD.JobTrackerE.NameNodeF.DataNodeG.ResourceManagerQuestion：正确答案：ACCAH(CCA-500)认证考试试题-8考点：ClusterSummary:45filesanddirectories,12blocks=57total.Heapsizeis15.31MB/193.38MB(7%)Refertotheabovescreenshot.YouconfigureaHadoopclusterwithsevenDataNodesandonofyourmonitoringUIsdisplaysthedetailsshownintheexhibit.Whatdoesthethistellyou?A.TheDataNodeJVMononehostisnotactiveB.Becauseyourunder-replicatedblockscountmatchestheLiveNodes,onenodeisdead,andyourDFSUsed%equals0%,youcan'tbecertainthatyourclusterhasallthedatayou'vewrittenit.C.YourclusterhaslostallHDFSdatawhichhadbocksstoredonthedeadDatNodeD.TheHDFSclusterisinsafemodeQuestion：正确答案：ACCAH(CCA-500)认证考试试题-9考点：WhichtwofeaturesdoesKerberossecurityaddtoaHadoopcluster?(Choosetwo)A.Userauthenticationonallremoteprocedurecalls(RPCs)B.EncryptionfordataduringtransferbetweentheMappersandReducersC.Encryptionfordataondisk(atrest)D.AuthenticationforuseraccesstotheclusteragainstacentralserverE.Rootaccesstotheclusterforusershdfsandmapredbutnon-rootaccessforclientsQuestion：正确答案：ADCCAH(CCA-500)认证考试试题-10考点：Assumingaclus