You are designing the DNS zone to support the Active Directory domain for Contoso.Ltd. Which two actions should you perform?()
A、Create ad.contoso.com as a standard primary DNS Zone.
B、Create ad.contoso.com as an Active DirectoryIntegrated DNS Zone.
C、Enable only authorized client computers to update DNS.
D、Configure a zone transfer between the DNS server at the ISP and the DNS servers at Contoso.Ltd.