RHCSA RHCE考前准备.docx

RHCSA+RHCE考前打算RHCSACertification:RHCSExamObjectivesOverviewThisguideprovidesinformationcandidatesmayuseinpreparingtotaketheRedHatCertifiedSystem.Administrator(RHCSA)examonRedHatEnterprise1.inux6.CandidatestakingtheRedHatCertifiedTechnician(RHCT)examonRedHatEnterprise1.inux5shouldconsultthepastRHCT/RHCEExamobjectiveslinkedabove.RedHatisnotresponsibleforthecontentoraccuracyofotherguides,books,onlineresources,oranyotherinformationprovidedbyorganizationsorindividualsotherthanRedHatTrainingandCertification.RedHatreservestherighttochangethisguidewhenappropriate.CandidateswhohaveenrolledinforthcomingclassesorexamsareadvisedtocheckthisguideperiodicalIyforchanges.ProspectiveemployersofRHCEsshouldverifyanyandallclaimsbypeopleclaimingtoholdthiscertificationbyrequestingtheircertificatenumberandverifyingithere.Performance-basedExamsTheRHCSAexamisaperformance-basedevaluationofRedHatEnterprise1.inuxsystemadministrationskillsandknowledge.Candidatesperformanumberofroutinesystemadministrationtasksandareevaluatedonwhethertheyhavemetspecificobjectivecriteria.Performance-basedtestingmeansthatcandidatesmustperformtaskssimiIartowhattheymustperformonthejob.AuthorizedTrainingPartnersOnlyRedHatandRedHatCertifiedTrainingPartnersadministertheRHCSexam.Prospectivecandidatesshouldexerciseduedi1igencewhenpurchasingaseatinanRHCSAexamfromaproviderotherthanRedHatitself.Theyshouldverifythattheprovideris,infact,anauthorizedtrainingpartnerorreselleringoodstanding.PleasenotifygreymarketredhataboutorganizationsthatpurporttooffertheRHCSAexambutarenotRedHatCertifiedTrainingPartners.ScoresandReportingOfficialscoresfortheRHCSAexamscomeexclusivelyfromRedHatCertificationCentral.RedHatdoesnotauthorizeexaminers,trainingpartnersorotherdepartmentsorindividualswithinRedHattoreportresultstocandidates.Scoresontheexamarereportedwithinthree(3)USbusinessdays.RedHatdoesnotreportperformanceonindividualitems,norwillitprovideadditionalinformationuponrequest.Thispolicyhelpsensureimpartialityandfairnessforallcandidatesworldwide.Scoresareusedtoestablishwhethercertificationshouldbeissuedandarereportedforthebenefitofcandidates.RedHatmakesnorepresentationsregardingtheuseofscoresforanyotherpurpose,suchasrankingorcomparingcandidates.FormatoftheRHCSAExamTheRHCSAexamisahands-on,practicalexamthatlasts2.5hours.Internetaccessisnotprovidedduringtheexam.Outsidematerialsarenotpermitted.DocumentationthatshipswithRedHatEnterprise1.inuxisavailableduringtheexam.RedHatreservestherighttomakechangestoformat,includingtimingandthepoliciesabove.Suchchangeswi11bemadepublicinadvancethroughrevisionstothisdocument.PreparationfortheRHCSExamRedHatencouragesal1candidatesforRHCSAtoconsidertakingoneormoreofitsofficialtrainingcoursestohelpprepare.Attendanceintheseclassesisnotrequired,andonecanchoosetotakejustanexam.Manysuccessfulcandidateswhohavecometoclassalreadypossessingsubstantialskillsandknowledgereportthattheclassmadeapositivedifferenceforthem.Tohelpyoudeterminethebestcoursestotake,RedHatprovidesonlineskillsassessment.WhileattendingRedHat,sclassescanbeanimportantpartofone,spreparation,attendingclassdoesnotguaranteesuccessontheexam.Previousexperience,practice,andnativeaptitudearcalsoimportantdeterminantsofsuccess.ManybooksandotherresourcesonsystemadministrationforRedHat,Sproductsareavai!able.RedHatdoesnotendorseanyaspreparationguidesforanyexams.Nevertheless,candidatesmayfindadditionareadingdeepensunderstandingandcanprovehelpful.ExamObjectivesRedHatreservestherighttoadd,modifyandremoveobjectives.Suchchangeswillbemadepublicinadvancethroughrevisionstothisdocument.RHCSAexamcandidatesshouldbeabletoaccomplishthetasksbelowwithoutassistance.Thesehavebeengroupedintoseveralcategories.UnderstandandUseEssentialToolsAccessashellpromptandissuecommandswithcorrectsyntax（能够运用正确的语法在提示符下运用吩咐）USeinput-outputredirection（,I,2,etc.）（运用I/O重定向，例如，2）Usegrepandregularexpressionstoanalyzetext（运用grep和正则表达式分析文本）AccessremotesystemsusingsshandVNC（运用ssh和VNC访问远程系统）1.oginHndSWilChUSerSinmulti-userrunIeveIs（在多用户运行级别下登录和切换用户）Archive,compress,unpackanduncompressfilesusingtar,star,gzip,andbzip2（运用tar/stargzip/bzip2吩咐打包、压缩、解包、解压缩文件）Createandedittextfiles（创建和编辑文本文件）Create,delete,copyandmovefilesanddirectories（创建、删除、熨制和移动文件及书目）Createhardandsoftlinks（创建硬链接文件和符号链接文件）1.ist,setandchangestandardugorwxpermissions（看看、设置和变更标准的文件权限）1.ocate,readandusesystemdocumentationincludingman,info,andfilesinusrsharedoc.（利用man、info吩咐查找帮助，阅读usrsharedoc书目下的文档）Note:RedHatmayuseapplicationsduringtheexamthatarenotincludedinRedHatEnterprise1.inuxforthepurposeofevaluatingcandidate'sabilitiestomeetthisobjective.OperateRunningSystemsBoot,reboot,andshutdownasystemnormally（正常地启动、重启和关闭系统）Hootsystemsintodifferentrun1.eveIsmanually（手动启动系统到另一个运行级别）USesingle-usermodetogainaccesstoasystem（运用单用户模式去获得系统访问权限）IdentifyCPU/memoryintensiveprocesses,adjustprocessprioritywithrenice,andkillprocesses（确定CPU/memory的状态，运用renice吩咐调整进程优先级，杀死进程）1.ocateandinterpretsystemlogfiles（定位和理解系统口志文件）Accessavirtualmachine,sconsole（访问虚拟机限制台）Startandst