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