YourcompanyhasanActiveDirectoryforestthathasfivedomains.AllDNSserversaredomaincontrollers.
A.ConfigureandenableDFSReplicationontheApp1Webserver.
B.Createahost(AAAA)recordfortheApp1WebserverintheDNSzonefortheforestrootdomain.
C.CreateazonenamedGlobalNamesonaDNSserver.ReplicatetheGlobalNameszonetoalldomaincontrollersintheforest.Createahost(A)recordfortheApp1Webserverinthezone.
D.CreateazonenamedLegacyWINSonaDNSserver.ReplicatetheLegacyWINSzonetoalldomaincontrollersintheforest.Createahost(A)recordfortheApp1Webserverinthezone.