Your network consists of a single Active Directory domain. The domain contains three domain
controllers and one DNS server. You plan to deploy Exchange Server 2010. You need to recommend
a DNS implementation that provides redundancy if a DNS server fails. What should you include in the
recommendations?

A.
Active Directory integrated DNS server

B.
DNS forwarding

C.
integrated DNS and WINS

D.
multiple MX records

Explanation:

With 3 domain controller all running the DNS service this will provide good fault tolerance if a single
server fails. Keep in mind that Exchange Server also requires Global Catalog Servers – so you should
have more than one on the network.