单项选择题 You have an Exchange Server 2010 organization. You plan to deploy two new Mailbox servers.  Both Mailbox servers will be members of a database availability group （DAG）. You need to recommend a hard-disk configuration for the new servers. Your recommendation must meet the following requirements： .Maximize write performance .Prevent a switchover if a single disk fails Which disk configuration should you recommend？（）

单项选择题 Your network contains 20 offices. Each office contains 1，000 users.  The users access their e-mail messages by using Microsoft Office Outlook. You have an Exchange Server 2010 organization.  You need to recommend an Exchange Server solution that meets the following requirements： .Ensures that users in each office download the list of recipients for their office only  .Ensures that users in each office can send e-mail messages to any user in the organization  What should you recommend？（）

单项选择题 Your company has three offices.  An Active Directory site named Site1， Site2， and Site3 exists for each office. You have an Exchange Server 2003 organization. You deploy Exchange Server 2010 servers in Site1.  You plan to deploy Exchange Server 2010 servers in Site2 and Site3.  You need to recommend a solution that allows the Exchange Server 2010 servers to coexist with the Exchange Server 2003 servers.  Your solution must meet the following requirements： .All e-mail messages that are sent to mailboxes on Exchange Server 2003 servers from mailboxes on Exchange Server 2010 servers must be delivered directly from a server in Site2  .All e-mail messages that are sent to mailboxes on Exchange Server 2010 servers from mailboxes on Exchange Server 2003 servers must be delivered directly to a server in Site1  What should you recommend？（）