Your network consists of an Active Directory forestthat contains two domains.
All serversrun Windows Server 2008 R2.
All domain controllersare configured as DNS Servers.
You have a standard primary zonefordev.contoso.comthat is stored on a member server.
You need to ensure that all domain controllers can resolve names from the dev.contoso.com zone.
What should you do?
A.
On the member server, create a stub zone.
B.
On the member server, create a NS record for eachdomain controller.
C.
On one domain controller, create a conditional forwarder. Configure the conditional forwarder to replicate to
all DNS servers in the forest.
D.
On one domain controller, create a conditional forwarder. Configure the conditional forwarder to replicate to
all DNS servers in the domain.
Explanation:
http://technet.microsoft.com/en-us/library/cc730756.aspx
Understanding Forwarders
A forwarder is a Domain Name System (DNS) server ona network that forwards DNS queries for external DNS
names to DNS servers outside that network. You can also forward queries according to specific domain names
using conditional forwarders.
You designate a DNS server on a network as a forwarder by configuring the other DNS servers in the network
to forward the queries that they cannot resolve locally to that DNS server. By using a forwarder, you can
manage name resolution for names outside your network, such as names on the Internet, and improve the
efficiency of name resolution for the computers in your network.
The following figure illustrates how external name queries are directed with forwarders.
…
Conditional forwarders
A conditional forwarderis a DNS server on a network that forwards DNS queries according to the DNS
domain name in the query. For example, you can configure a DNS server to forward all the queries that it
receives for names ending with corp.contoso.com to the IP address of a specific DNS server or to the IP
addresses of multiple DNS servers.
Further information:
http://technet.microsoft.com/en-us/library/cc794735%28v=ws.10%29.aspx
Assign a Conditional Forwarder for a Domain Name
http://technet.microsoft.com/en-us/library/cc754941.aspx
Configure a DNS Server to Use Forwarders
