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？（）

单项选择题 Your network consists of an Active Directory domain that contains the domain controllers shown in the following table. You plan to deploy an Exchange Server 2010 server in each site.  You need to recommend changes to the domain controllers to support the installation of Exchange Server2010. What should you do？（）

单项选择题 You are the enterprise administrator for an Exchange Server 2010 organization. All users run Microsoft Office Outlook 2010.  You are designing a sharing solution for your organization and a partner organization. The partner organization also uses Exchange Server 2010.  You need to recommend a strategy for sharing information with the partner organization to meet the following requirements： .Provide cross-organizational access to user contacts  .Provide cross-organizational access to free\busy information  What should you recommend？（）