单项选择题 YouworkastheenterpriseexchangeadministratoratCompany.com.TheCompany.comnetworkconsistsofasingleActiveDirectorydomainnamedCompany.com.Company.comhasanExchangeServer2010organization.Company.comcontainsthreeserversnamed-sr11，-sr12and-sr13.theseserversareconfiguredasfollows：-sr11hasthefront-endroleinstalledandisrunningexchangeserver2003servicepack2.-sr12hastheback-endroleinstalledandisrunningexchangeserver2003servicepack2.-sr13hastheclientaccessroleandthemailboxroleinstalledandisrunningexchangeserver2010.youhavereceivedinstructionsfromtheciotomovethemailboxesfrom-sr12to-sr13.however，youneedtomakesurethagtheuserscanusethee-mailfacilities.Whatshouldyoudo？（）

单项选择题 You are responsible for increasing the security within the Company LAN. Of the following choices  listed below，  which is true regarding layer 2 security and mitigation techniques？ （）

单项选择题 YouhaveaMicrosoftASP.NETFrameworkversion1.0application.TheapplicationdoesnotuseanyfeaturesthataredeprecatedintheMicrosoft.NETFrameworkversion3.5.TheapplicationrunsonMicrosoftIIS6.0. YouneedtoconfiguretheapplicationtousetheASP.NETFrameworkversion3.5withoutrecompilingtheapplication. Whatshouldyoudo？（）