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 You have an Exchange Server 2010 organization. Your company’s compliance policy states the following： .Delete e-mail messages sent to legal department users that are older than 180 days. .Delete e-mail messages sent to all other users that are older than 60 days  You need to recommend a solution that meets the requirements of the compliance policy.  What should you recommend？（）

单项选择题 You have an Exchange Server 2010 organization.  All users access their mailboxes by using Outlook Web App （OWA）.  You need to plan a solution to reduce the number of e-mail messages that are accidentally sent todistribution groups that contain company executives.  What should you include in the plan？（）