单项选择题
A.Export-exchange certificate
B.Export-transport rule connection
C.Backup system state
D.You must log on by using an account that is a member of the local Administrators group on that computer
单项选择题 You have a server that runs Windows Server 2008 R2. You plan to install Exchange Server 2010 on the server. You need to install the Exchange Server 2010 prerequisites for the Unified Messaging （UM）， Mailbox， Client Access， and Hub Transport server roles. What should you run（）？
单项选择题 Youneedtoblockmessagesfromsendersthatdonotcomplysenderpolicyframework（SPF）.Whatdoyouneedtoimplement？（）
单项选择题 Yourorganizationhas5Mailboxserversand5Activedirectoryservers.YouneedtoinstallanewMailboxserver.Duringtheinstallationyounoticethemailboxdatabasewillnotmount.Whatshouldyoudotomakesureyoucaninstallthemailboxserver：（）