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.