Your network contains an Active Directory domainnamed contoso.com.
Contoso.com contains two domain controllers.
The domain controllers are configured as shown in the following table:

All client computershave IP addressesin the 10.1.2.1 to 10.1.2.240 range.
You need to minimize the number of client authentication requests sent to DC2.
What should you do?

A.
Create a new site named Site1. Create a new subnet object that has the 10.1.1.0/24 prefix and assignthe
subnet to Site1. Move DC1 to Site1.

B.
Create a new site named Site1. Create a new subnet object that has the 10.1.1.1/32 prefix and assignthe
subnet to Site1. Move DC1 to Site1.

C.
Create a new site named Site1. Create a new subnet object that has the 10.1.1.2/32 prefix and assignthe
subnet to Site1. Move DC2 to Site1.

D.
Create a new site named Site1. Create a new subnet object that has the 10.1.2.0/24 prefix and assignthe
subnet to Site1. Move DC2 to Site1.

Explanation:
Reference:
http://www.examcollection.com/microsoft/Microsoft.BrainDump.70-640.v2011-04-06.230q.vce.file.html
Spider from Switzerland – Apr 12 2011, 7:13 PM
Creating a new site and assigning a subnet of 10.1.1.2 with subnet mask of 255.255.255.255, it means only
ONE ip (the DC2 ip) will be included on the site1 subnet coverage. Therefore all the request will be processed
from the DC1 in the default-first-site and dc2 willauthenticate only itself.