Networking with Windows Server 2016 — Question 97

Your network contains an Active Directory forest named contoso.com.
The forest contains five domains. You manage DNS for the contoso.com domain only.
You are not responsible for managing DNS for the child domains.
The DNS servers in a child domain named research.contoso.com are reconfigured often.
You need to ensure that clients in contoso.com can resolve addresses in research.contoso.com. The solution must minimize zone replication traffic.
What should you do?

Answer options

• A. Create a primary zone for research.contoso.com on the DNS servers of contoso.com
• B. Create a secondary zone for research.contoso.com on the DNS servers of contoso.com
• C. Create a stub zone for research.contoso.com on the DNS servers of contoso.com
• D. Create a delegation for research.contoso.com

Correct answer: D

Explanation

Creating a delegation for research.contoso.com allows the contoso.com DNS servers to refer queries to the appropriate DNS servers in the child domain without replicating the entire zone. This minimizes replication traffic as it doesn't require transferring zone data, unlike primary or secondary zones. A stub zone would also reduce replication but is not as effective as delegation in this scenario where the child domain's DNS is frequently changed.