Givenbelowisalistofscenarios：1）Auserterminateshissessionabnormally.2）Theconnectionbetweentheserverandtheclientapplicationterminatesbecauseofanetworkfailure.3）Aschemaisaccidentallydropped.4）Thetablespaceisaccidentallydroppedfromthedatabase.5）Theharddiskgetscorruptedandthedatafilesinthediskarelost.6）Thedatabaseinstanceabnormallyshutsdownbecauseofpowerfailure.WhichscenariosrequireDBAinterventiontoperformrecovery（）
A.1，3，and6
B.4，5，and6
C.3，4，and5
D.1，2，and6

单项选择题如果要使装入内存的程序在内存中移动后仍能正常运行，必须要有( )的支持。

单项选择题Youarecreatingacontentmanagementsystem（CMS）&ensp

单项选择题publicclassClassA{11.publicvoidcount（inti）{12.count（＋＋i）；13.}14.}And：20.ClassAa=newClassA（）；21.a.count（3）；Whichexceptionorerrorshouldbethrownbythevirtualmachine？（）

单项选择题10.interfaceFoo{}11.classAlphaimplementsFoo{}12.classBetaextendsAlpha{}13.classDeltaextendsBeta{14.publicstaticvoidmain（String[]args）{15.Betax=newBeta（）；16. insertcodehere17.}18.}Whichcode，insertedatline16，willcauseajava.lang.ClassCastException？（）A.Alphaa=x；B.Foof=（Delta）x；C.Foof=（Alpha）x；D.Betab=（Beta）（Alpha）x；

单项选择题YouworkinacompanywhichusesSQLServer2008.Youaretheadministratorofthecompanydatabase.NowyouareinchargeofaSQLServer2008instance.ThereisadatabasenamedDB1intheinstance.TheDB1databaseincludesspatialdatatypes.OnDB1databse,youhavetoperformadatabaseconsistencychecktoincludethespatialindexes.Besidesthis,youmustmakesurethatyoucanreducetheeffectonthedatabaseconcurrencytotheleast.SowhichTransact-SQLstatementshouldyourun?（）A.DBCCCHECKCATALOG(DB1);B.DBCCCHECKALLOC(DB1)WITHTABLOCK;C.DBCCCHECKDB(DB1)WITHTABLOCK,PHYSICAL_ONLY;D.DBCCCHECKDB(DB1)WITHEXTENDED_LOGICAL_CHECKS;