You work as the network administrator at Domain.com. The Domain.com network consists of a single Active Directory domain named Domain.com. Domain.com has its headquarters located in London and branch office located in Paris. All servers on the Domain.com network run Windows Server 2008 and all client computers run Windows Vista.
During the course of the day Domain.com is approached by Weyland Industries who wants Domain.com to configure their Windows Server 2008 DNS server to answer queries for hosts on the local intranet but not the Internet.
What should you do? (Choose two)

A.
You should consider having the forwarding option left turned off.

B.
You should consider having the Weyland Industries DNS server installed behind the Weyland Industries firewall.

C.
You should consider having recursive lookups disabled.

D.
You should consider having the Weyland.com server configured as a root server.

Explanation:
You should then leave the root hints for the top-level domains.
Having the server configured as a root server and leaving forwarding off indicates that the server will either answer a query for known addresses or return a failure for unknown addresses.