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 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？（）
单项选择题 Your company has a main office and 50 branch offices. Each office is configured as an Active Directory site. Each branch office site contains a domain controller. The main office site contains all the global catalog servers in the forest. Each branch office contains a WAN link that connects to the main office. You need to plan the deployment of new Mailbox servers to meet the following requirements： .Ensure that users in the branch offices can access their mailboxes if their local domain controller fails.Deploy the minimum number of Exchange servers What should you include in the plan？（）