单项选择题 YournetworkconsistsofanActiveDirectoryforestthatcontainsonedomain.AlIdomaincontrollersrunWindowsServer2008andareconfiguredasDNSservers.YouhaveanActrveDirectory-integratedzone.YouhavetwoActrveDirectorysites.Eachsitecontainsfivedomaincontrollers.YouaddanewNSrecordtothezone.YouneedtoensurethatalldomaincontrollersimmediatelyreceivethenewNSrecord.Whatshouldyoudo（）A.FromtheDNSManagerconsole，reloadthezone.B.FromtheServicessnap-in，restarttheDNSServerservice.C.Fromthecommandprompt，runrepadmin/syncall.D.FromtheDNSManagerconsole，increasetheversionnumberoftheSOArecord.

单项选择题 YournetworkconsistsofanActiveDirectoryforestthatcontainsonedomainnamedcontoso.comAlIdomaincontrollersrunWindowsServer2008andareconfiguredasDNSserversYouhavetwoActiveDirectory-integratedzones：contoso.comandnwtraders.comYouneedtoensureauserisabletomodifyrecordsinthecontoso.comzone.YoumustpreventtheuserfrommodifyingtheSOArecordinthenwtraders.comzoneWhatshouldyoudo（）A.FromtheDNSManagerconsole，modifythepermissionsofthecontoso.comzone.B.FromtheDNSManagerconsole，modifythepermissionsofthenwtraders.comzone.C.FromtheActrveDirectoryUsersandComputersconsole，runtheDelegationofControlWizard.D.FromtheActrveDirectoryUsersandComputersconsole，modifythepermissionsoftheDomain Controllersorganizationalunit（OU）.

单项选择题 YouhaveasingleActiveDirectorydomain.AlIdomaincontrollersrunWindowsServer2008andareconfiguredasDNSservers.ThedomaincontainsoneActiveDirectory-integratedDNSzone.YouneedtoensurethatoutdatedDNSrecordsareautomaticallyremovedfromtheDNSzone.Whatshouldyoudo（）A.Fromthepropertiesofthezone，enablescavenging.B.Fromthepropertiesofthezone，disabledynamicupdates.C.Fromthepropertiesofthezone，modifytheTTLoftheSOArecord.D.Fromthecommandprompt，runipconfig/flushdns.