Your network contains an Active Directory forest named contoso.com. The forest contains two
domains named contoso.com and child.contoso.com. The forest contains two domain controllers.
The domain controllers are configured as shown in the following table.
You need to ensure that DC2 can provide authoritative responses for queries to the contoso.com
namespace.
What should you do?
A.
On DC1, create a delegation.
B.
On DC1, change the replication scope of the contoso.com zone.
C.
On DC2, create a forwarder.
D.
On DC2, modify the Zone Transfers settings.
Explanation:
For DC1 to be able to provide authoritative responses to DNS queries the replication scope should be
changed accordingly so that it has the zone data for the contoso.com domain.
A
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It’s B
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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. For more information about forwarders and conditional forwarders, see Using Forwarders.
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Then DC2 would not be the authoritative DNS server. Thus a DNs Scope needs to be present on DC2 , thus a replication of the scope from DC1 needs to occur..
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You need to ensure that DC2 is an authoritative DNS server, so it needs to hold the records that are needed.
Options C + D both require DC2 to have the DNS role installed, which it is not, so these are invalid.
Option A would set up a delegation on DC1 that would specify any queries for the child.contoso.com domain made on DC1 can be made authoritative on DC2. However, this would not make requests on DC2 for the contoso.com domain authoritative, so this option is invalid.
This only leaves Option B – and just to clarify that this is the right answer, configuring the replication of the contoso.com zone would allow DC2 to use it’s own COPY of a record (meaning even though it is a copy, it is still authoritative). Records are created on DC1, which will then be replicated across to DC2.
Correct answer: B.
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