单项选择题 Youhavearead-onlytablespaceonread-onlymedia.Youwanttoperformamediarecoveryontheexistingdatafiles，butusingabackupcontrolfile.Thebackupcontrolfileindicatesthatthestatusoftheread-onlytablespacewasread/writewhenthecontrolfilewasbackedup.Whatshouldyouconsider？（）A.takedatafilesfromtheread-onlytablespaceofflinebeforeperformingarecoveryB.recoveryusingbackupcontrolfileisnotpossible，sorestoreallthefilesfromthelastfulldatabasebackup，andthenopenthedatabaseC.droptheread-onlytablespaceandre-createthetablespaceafterrecoveryD.performarecovery；statusofthetablespaceincontrolfilewillbechangedautomatically

单项选择题 Givenamethodthatmustensurethatitsparameterisnotnull：11.publicvoidsomeMethod（Objectvalue）{12.//checkfornullvalue...20.System.out.println（value.getClass（））；21.}Whatinsertedatline12，istheappropriatewaytohandleanullvalue？（）A.assertvalue==null；B.assertvalue!=null，"valueisnull"；C.if（value==null）{thrownewAssertionException（"valueisnull"）；}D.if（value==null）{thrownewIllegalArgumentException（"valueisnull"）；}

单项选择题 YouaremaintainingyourdatabaseinOracle10g.Youwanttostoretheinformationaboutthebackupofthedatabaseinthecontrolfile.Youissuethefollowingstatement：SQL>ALTERSYSTEMSETCONTROL_FILE_RECORD_KEEP_TIME=400；Whatistheoutcomeofthisstatement？（）A.Thestatementwillnotexecutesuccessfully.B.Thestatementwillexecutesuccessfully，andthebackupsmetadatawillbemaintainedinthecontrolfilefor400daysC.Thestatementwillexecutesuccessfully，andthebackupsmetadatawillbemaintainedintherecoverycatalogfor400days.D.Backupswillbedeletedfromthemediaafter400days.

单项选择题 Youhaveissuedthefollowingcommand：RMAN>CONFIGURERETENTIONPOLICYTORECOVERYWINDOWOF100DAYS；Whatwillbetheresultofusingtheabovecommand？（）

单项选择题 YouwanttoadministeryourPRODdatabasefromaremotehostmachineusingaWeb－enabledinterface.WhichOracletoolwouldyouusetoaccomplishthistaskefficientlywithoutusingcommand－lineinterfaces？（）

单项选择题 Usingthereportsserverhowwouldyouforcetheordersreportintheordersentryapplicationtoruneverysixhours?（）

单项选择题 YouaremaintainingtheSALESdatabaseofacompany.YouhaveneverbackeduptheUSERStablespacethatiscurrentlyoffline.OnSunday，youissuedthefollowingcommands：CONFIGUREDEFAULTDEVICETYPETOsbt；CONFIGUREBACKUPOPTIMIZATIONON；CONFIGURERETENTIONPOLICYTOREDUNDANCY3；FromMondaytoSaturday，youperformedthefollowingactions：DayActionMondayBACKUPDATABASETuesdayBACKUPDATABASEWednesdayBACKUPDATABASEThursdayBACKUPDATABASEFridayBACKUPDATABASESaturdayBACKUPDATABASEHowmanytimeswillthebackupoftheUSERStablespacebeperformed？（）

单项选择题 Youareusingflatfilesasthedatasourceforoneofyourdatawarehousingapplications.Tooptimizetheapplicationperformance，youplantomovethedatafromtheflatfilestoclusteredtablesinanOracledatabase.Whilemigratingthedata，youwanttohaveminimalimpactonthedatabaseperformanceandoptimizethedataloadoperation.WhichmethodwouldyouusetoloaddataintotheOracledatabase（）A.Usetheexternaltablepopulation.B.UsetheOracleDataPumpexportandimportutility.C.UsetheconventionalpathdataloadoftheSQL*Loaderutility.D.UsetheINSERTINTO...SELECTcommandtoloadthedata.

单项选择题 Youarecreatingasalesdatatemplateandneedtoaddapicturetothemargin.Whatisthebestwaytoaddthismargin?（）

单项选择题 AcustomerhasawebapplicationwithHTTPSessionsthatneedtobereplicatedtoabackupsitethatismorethan100milesawayfromtheprimarysite,connectedovertheInternet.WhichtypeofsessionreplicationinWebLogicisrecommended?（）A.MANReplicationB.WANReplicationC.SynchronousReplicationD.AsynchronousReplicationE.DatabaseReplication

单项选择题 Howwouldyoudefaultthelayoutofaparameterform?（）

单项选择题 WhichmethodintheThreadclassisusedtocreateandlaunchanewthreadofexecution？（）

单项选择题 classA{publicintgetNumber（inta）{returna＋1；}}classBextendsA{publicintgetNumber（inta）{returna＋2}publicstaticvoidmain（Stringargs）{Aa=newB（）；System.out.printIn（a.getNumber（0））；}}Whatistheresult？（）

单项选择题 publicclassXimplementsRunnable（privateintx；privateinty；publicstaticvoidmain（Stringargs）（Xthat=newX（）；（newThread（that））.start（）；（newThread（that））.start（）；）publicsynchronizedvoidrun（）（for（；；）（x++；y++；System.out.printIn（x=+x+，y=+y）；）））Whatistheresult？（）A.Anerroratline11causescompilationtofail.B.Errorsatlines7and8causecompilationtofail.C.Theprogramprintspairsofvaluesforxandythatmightnotalwaysbethesameonthesameline（forexample，“x=2，y=1”）D.Theprogramprintspairsofvaluesforxandythatarealwaysthesameonthesameline（forexample，“x=1，y=1”.Inaddition，eachvalueappearstwice（forexample，“x=1，y=1”followedby“x=1，y=1”）E.Theprogramprintspairsofvaluesforxandythatarealwaysthesameonthesameline（forexample，“x=1，y=1”.Inaddition，eachvalueappearstwice（forexample，“x=1，y=1”followedby“x=2s，y=2”）

单项选择题 classAimplementsrunable（2.int&ensp

单项选择题 classA{publicbytegetNumber（）{return1；}}classBextendsA{publicshortgetNumber（）{return2；}publicstaticvoidmain（Stringargs）{Bb=newB（）；System.out.printIn（b.getNumber（））}}Whatistheresult？（）

单项选择题 publicclassTest{publicstaticvoidmain（Stringargs）{Stringfoo=args[1]；Stringbar=args；Stringbaz=args；System.out.printIn（baz=”＋baz）；}}Andtheoutput：Baz=2Whichcommandlineinvocationwillproducetheoutput？（）

单项选择题 packagefoo；importjava.util.Vector；privateclassMyVectorextendsVector{inti=1；publicMyVector（）{i=2；}}publicclassMyNewVectorextendsMyVector{publicMyNewVector（）{i=4；}publicstaticvoidmain（Stringargs）{MyVectorv=newMyNewVector（）；}}ThefileMyNewVector.javaisshownintheexhibit.Whatistheresult？（）A.Compilationwillsucceed.B.Compilationwillfailatline5.C.Compilationwillfailatline6.D.Compilationwillfailatline14.E.Compilationwillfailatline17.

单项选择题 WhichconstructsaBufferedIputStream？（）

单项选择题 classsuper{publicintgetLength（）{return4；}}publicclassSubextendsSuper{publiclonggetLength（）{return5；}publicstaticvoidmain（Stringargs）{supersooper=newSuper（）；Subsub=newSub（）；System.out.printIn（sooper.getLength（）+，”+sub.getLength（）}；}Whatistheoutput？（）A.4，4B.4，5C.5，4D.5，5E.Thecodewillnotcompile.