单项选择题
A.Implement a DNS zone for each office.
B.Change all RODCs to Windows Server 2008 （x64） RODCs.
C.Implement a writable domain controller in each branch office.
D.Disable site link bridging for the forest and configure Exchange-specific costs.
单项选择题 You have an Exchange organization that contains Exchange 2000 Server Service Pack 3 （SP3）， Exchange Server 2003 Service Pack 2 （SP2）， and Exchange Server 2007 Service Pack 1 （SP1） servers. You need to transition the organization to Exchange Server 2010. What should you do first？（）
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？（）
单项选择题 You have an Exchange Server 2010 organization. You plan to deploy a database availability group （DAG）. You need to recommend disk configurations for the servers in the organization. The solution must minimize costs. What should you recommend？（）