单项选择题 Your company has an Active Directory forest.  The forest contains two sites named Site1 and Site2.  You plan to deploy Exchange Server 2010 servers in both sites.  You need to plan a high-availability solution for the Mailbox servers that meets the following requirements： .Users must be able to access their mailboxes if a single server fails  .Users must be able to access their mailboxes remotely if a single site becomes unavailable  What should you do？（）

单项选择题 Your network consists of a single Active Directory site. You plan to deploy Exchange Server 2010.  You need to plan the deployment of Exchange Server 2010 servers to meet the following requirements：.All Mailbox servers must belong to a database availability group （DAG） .MAPI connections from Outlook clients must be load balanced by using a hardware load balancer .If a single server fails， users must continue to send and receive e-mail .The plan must minimize the number of servers deployed  What should you include in the plan？（）

单项选择题 Your company has two data centers.  Each data center contains a perimeter network.  Your network contains an Exchange Server 2010 organization.  You plan to deploy Exchange Server 2010 Edge Transport servers in the perimeter networks.  You need to recommend a solution for the Edge Transport servers that meets the following requirements：.Distribute inbound e-mail messages across all Edge Transport servers  .Ensure that users receive inbound e-mail messages if an Edge Transport server fails  .Ensure that users receive inbound e-mail messages if a single data center network becomes unavailable.Minimize costs  What should you recommend？（）