YourcompanyhasanExchange2010organizationthatcontainsmultipleHubTransportservers.Youhavealine-of-businessapplicationthatrelayse-mailmessagesbyusingaHubTransportservernamedHubTheapplicationonlysupportssendinge-mailtoasingleSMTPserver.Youneedtoensurethattheapplicationcanrelaye-mailmessagesifHub1fails.Whatshouldyoudo？（）
A.Implementlogtruncation
B.InstallandconfigurefailoverclusteringontheHubTransportservers.
C.ImplementWindowsnetworkloadbalancingontheHubTransportservers.
D.CreatemultipleMXrecordsfortheHubTransportserversintheinternalDNSzone.
参考答案：C
