单项选择题 Your network contains an Active Directory forest. All domain controllers run Windows Server 2008. You need to ensure that you can install an Exchange Server 2010 server in the Active Directory forest.  What should you do（）？

单项选择题 YounetworkcontainsanExchangeServer2010Mailboxserver.Youinstallandconfigureathird-partyantivirusapplicationontheserver.YoudiscoverthatamailboxdatabasenamedDB1doesnotmount.YouattempttomountthemailboxdatabaseandreceiveanerrormessagestartingthatthefilenamedE01.logcannotbefound.YouneedtomountDB1.Thesolutionmustpreventtheantivirusapplicationfromcausingthesameerror.Whatshouldyoudo？（）

单项选择题 You have an Active Directory forest that contains a single site.Your organization contains the Exchange Server 2010 servers shown in the following table： All clients connect from the Internet by using IMAP4.You need to prevent some users from using IMAP4 to connect to the mailboxes Server5. What should you do？（）