Your company has a main office and three branch offices. The network consists of a single Active Directory
domain. Each office contains an Active Directory domain controller.
You need to create a DNS infrastructure for the network that meets the following requirements:
The DNS infrastructure must allow the client computers in each office to register DNS names within their
respective offices.
The client computers must be able to resolve names for hosts in all offices.
What should you do?

A.
Create an Active Directory-integrated zone at themain office site.

B.
Create a standard primary zone at the main officesite and at each branch office site.

C.
Create a standard primary zone at the main officesite. Create a secondary zone at each branch office site.

D.
Create a standard primary zone at the main officesite. Create an Active Directory-integrated stub zone at
each branch office site.

Explanation:
Registration hostnames in own offices requires primary (AD-integrated or standard) zone
Resolving hostnames in all (main and branch) offices requires primary AD-integrated zone (domain-levelis
sufficient because of SINGLEdomain) or standard secondary zone
Hence, AD-integrated zone needs to be set up in anyone offices