单项选择题
A.In each perimeter network， deploy one Edge Transport server. Implement failover clustering.
B.In each perimeter network， deploy two Edge Transport servers. Implement failover clustering.
C.In each perimeter network， deploy one Edge Transport server. Configure a mail exchange （MX） record for each server.
D.In each perimeter network， deploy two Edge Transport servers. Configure a mail exchange （MX） record for each server.
单项选择题 You have an Exchange Server 2010 organization. You need to recommend a client access solution that meets the following requirements： .Reduces the time required for users to reconnect to user mailboxes if a single Client Access server fails.Prevents users from being prompted for authentication if a single Client Access server fails What should you recommend？（）
单项选择题 Your network contains an internal network and a perimeter network. The internal network contains a single Active Directory site. The perimeter network contains two Exchange Server 2010 Edge Transport servers. You plan to deploy an Exchange Server 2010 organization on the internal network. You need to plan the deployment of Hub Transport server roles to meet the following requirements：.If a single Hub Transport server fails， e-mail messages from the Internet must be delivered to the Mailboxservers. .If a single Hub Transport server fails， users must be able to send e-mail messages to other users thathave mailboxes on the same Mailbox server. What should you include in the plan？（）
单项选择题 You have a Microsoft Internet Security and Accelerator （ISA） 2006 server that provides all Internet accessfor your company. You have two Mailbox servers configured in a database availability group （DAG）， two Client Accessservers， and two Hub Transport servers. You need to recommend changes to the environment to ensure that users can access Outlook Web App（OWA） from the Internet if any single server fails. What should you recommend？（）