You are the network administrator for the ABC Company.
Your network consists of two DNS serversnamed DNS1and DNS2.
The userswho are configured to use DNS2 complainbecause they are unable to connect to Internet
websites.
The following table shows the configuration of both servers:

The users connected to DNS2 need to be able to access the Internet.
What needs to be done?

A.
Build a new Active Directory Integrated zone on DNS2.

B.
Delete the .(root) zone from DNS2 and configure Conditional forwarding on DNS2.

C.
Delete the current cache.dns file.

D.
Update your cache.dns file and root hints.

Explanation:
Basically the same as B/Q4.
http://support.microsoft.com/kb/298148
How To Remove the Root Zone (Dot Zone)
When you install DNS on a Windows 2000 server that does not have a connection to the Internet, the zone for
the domain is created and a root zone, also known as a dot zone, is also created. This root zone may prevent
access to the Internet for DNS and for clients of the DNS. If there is a root zone, there are no otherzones other
than those that are listed with DNS, and you cannotconfigure forwarders or root hint servers. For these
reasons, you may have to remove the root zone.