单项选择题

Whichnamingmethodusesthetnsnames.orafiletostoretheconnectdescriptorusedbytheclientwhileconnectingtothedatabaseinstancefromaremotemachine（）

A.hostnamingmethod
B.localnamingmethod
C.externalnamingmethod
D.directorynamingmethod
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ouworkasanetworkadministratoratABC.com.TheABC.comnetworkconsistsofasingledomainnamedABC.com.TheABC.comnetworkhasaWindowsServer2012R2servernamedABC_SR07thatrunstheHyper-Vserverrole.YouaretocreateavirtualmachinenamedABC_VT01onABC_SR07.YouneedtoensurethatanysnapshotofABC_VT01usesaslittlediskspaceaspossible.HowwouldyouconfigureABC_VT01tomeetthisobjective？（）A.Youshouldmakeuseofadynamicallyexpandingvirtualharddisk（VHD）.B.Youshouldmakeuseofafixedvirtualharddisk（VHD）.C.YoushouldspecifyasmallMaximumRAMvalue.D.YoushouldspecifyasmallMinimumRAMvalue.E.YoushouldmakeuseofavirtualNUMAtopology.F.Youshouldenablediskcompression.
单项选择题
Youhavealargeamountofhistoricaldatainanoperatingsystemfile.Someanalystsinyourorganizationneedtoquerythisdata.Thefileistoolargetoloadintoyourcurrentdatabase.Whichisthemosteffectivemethodtoaccomplishthetask？（）A.Upgradethehardware memorytoaccommodatethedata.B.LoadthedataintoyourdatabasebyusingthePARALLELclause.C.GiveanalystsDBAprivilege，sothattheycanqueryDBA_EXTERNAL_TABLES.D.Useanexternaltablesoyoucanhavethemetadataavailableinyourdatabase，butleavethedataintheoperatingsystemfiles.
A.Someanalystsinyourorganizationneedtoquerythisdata.Thefileistoolargetoloadintoyourcurrentdatabase.Whichisthemosteffectivemethodtoaccomplishthetask？（）
A.Upgradethehardware/memorytoaccommodatethedata.
B.LoadthedataintoyourdatabasebyusingthePARALLELclause.
C.GiveanalystsDBAprivilege，sothattheycanqueryDBA_EXTERNAL_TABLES.
D.Useanexternaltablesoyoucanhavethemetadataavailableinyourdatabase，butleavethedataintheoperatingsystemfiles.
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