YouhaveanExchangeServer2010organization.Theorganizationisauthoritativeforthedomaincontoso.com.Youcreateafederatedtrust.YouneedtoensurethatfederatedpartnerscanautomaticallylocatetheClientAccessserversintheorganization.WhatshouldyoucreatefromanexternalDNSserver？（）
A.anArecordforautodiscover.contoso.com
B.anArecordforFederatedSharing.contoso.com
C.anSRVrecordfor_autodiscover._TCP._msdcs.contoso.com
D.anSRVrecordfor_FederatedSharing._UDP._msdcs.contoso.com
参考答案：A
