An internal DNS server requires a NAT on a Cisco IOS router that is dual-homed to
separate ISPs using distinct CIDR blocks. Which NAT capability is required to allow hosts
in each CIDR block to contact the DNS server via one translated address?

A.
NAT overload

B.
NAT extendable

C.
NAT TCP load balancing

D.
NAT service-type DNS

E.
NAT port-to-application mapping