You manage the DNS structure on your network. The network security group has decided that only one DNS server should contact the Internet. Under no circumstances should other servers contact the Internet for DNS queries, even if the designated server is down. You have decided that the DNS server named DNS$-$Int should be the server allowed to contact the Internet. How should you configure your DNS structure to accommodate these requirements?

On each DNS server except DNS$-$Int, in the Advanced tab of the server's Properties dialog box, disable recursion. No changes are necessary for DNS$-$Int.

On each DNS server except DNS$-$Int, configure a forwarder pointing to DNS$-$Int. Disable the use of root hints if no forwarders are available. No changes are necessary on DNS$-$Int.

On each DNS server except DNS$-$Int, configure a root hint to point to DNS$-$Int and delete all other root hints. Configure a root zone on DNS$-$Int.

On each DNS server except DNS$-$Int, configure a forwarder pointing to DNS$-$Int. Configure DNS$-$Int as a forwarder by enabling forwarded requests in the Forwarders tab of the server's Properties dialog box.