单项选择题 Your Exchange Server 2010 organization contains two Hub Transport servers in a single site. The organization receives all e-mail sent to a SMTP domain named contoso.com.  Your company purchases another company that uses a SMTP domain named fabrikam.com. You plan to manage message hygiene for both SMTP domains.  You need to recommend changes to the organization to support the planned deployment.  The solution must prevent e-mail sent to fabrikam.com from being delivered to your internal organization.  What should you recommend？（）

单项选择题 Your company has a main office and ten branch offices.  Your network consists of a single domain Active Directory forest. An Active Directory site exists for each office.  The main office contains five domain controllers that run Windows Server 2008 （x64）.  Each branch office contains one read-only domain controller （RODC） that runs Windows Server 2008（x86）.  All domain controllers are configured as global catalog servers. You plan to deploy one Exchange Server 2010 server in each site.  You need to recommend changes to Active Directory to support the planned deployment.  The solution must ensure that Exchange servers in each branch-office site connect to their local domaincontrollers.  What should you recommend？（）

单项选择题 You have an Exchange Server 2010 Hub Transport server named Hub1. You install an application on a third-party server named Server1.  You discover that the application cannot authenticate to remote servers.  You need to ensure that the application can relay e-mail messages by using Hub1.  What should you do？（）