单项选择题 You have an Exchange that contains the exchange servers shown in the following table： You plan to move all mailboxes from server2 and server3 to server4.  You need to ensure that all users can send and receive e-mail messages after their mailboxes are moved to server4.What should you do？（）

单项选择题 YouhavetwoExchangeServer2010namedServer1andServer2.Server1hastheMailboxserverroleinstalled.Server2hastheHuleTransportandclientaccessserverrolesinstalled.Youneedtoensurethatuserscansende-mailandreceivee-mailbyusingWindowsLiveMailorMicrosoftOutlookExpress.Whatshouldyoudo？（）

单项选择题 YouhaveanExchangeorganizationthatcontainsanExchangeServer2003SP2.AllserversaremembersofoneAdministrativeGroupandoneRoutingGroup.YouplantotransitiontheorganizationtoExchangeServer2010.YouneedtopreparetheExchangeorganizationforthedeploymentofExchangeServer2010mailbox，ClientAccessandHubTransportsservers.Whatshouldyoudofirst？（）