单项选择题
A.Only host
B.Only local
C.Either host or local
D.Both host and local
单项选择题 YouneedtoimportalldefinitionsofobjectsbelongingtotheTS_EMPLOYEEStablespacebyusingtheexportfileexpdat.dmp.Whichimportstatementiscorrect？（）
多项选择题 OracleNetisresponsibleforestablishingandmaintainingtheconnectionbetweentheclientapplicationandtheserver.Ontheclientside，OracleNetisresponsibleforwhichthreeconnectivityissues？（）
单项选择题 Thelistenerusesdynamicinformationaboutthedatabaseandinstanceithasreceivedthroughserviceregistrationbeforeusinginformationstaticallyconfigured.Someservicessuchasheterogeneousservicesandexternalproceduresrequiretheuseofinformationstaticallyconfiguredwithinlistener.ora.Inordertosupportthis，whichtoolcouldbeusedtoconfigurethelistenerstatically？（）