Your network contains an Active Directory domain named contoso.com.
The domain contains two servers named Server1 and Server2 that run Windows Server 2012 R2.
Server1 has the DHCP Server server role installed. Server2 has the Hyper-V server role installed.
Server2 has an IP address of 192.168.10.50. Server1 has a scope named Scope1 for the 192.168.10.0/24 network.
You plan to deploy 20 virtual machines on Server2 that will be connected to the external network.
The MAC addresses for the virtual machines will begin with 00-15-SD-83-03.
You need to configure Server1 to offer the virtual machines IP addresses from 192.168.10.200 to 192.168.10.21g.
Physical computers on the network must be offered IP addresses outside this range.
You want to achieve this goal by using the minimum amount of administrative effort.
What should you do from the DHCP console?

A.
Create reservations.

B.
Create a policy.

C.
Delete Scope1 and create two new scopes.

D.
Configure Allow filters and Deny filters.

Explanation:
A)
With client reservations, it is possible to reserve a specific IP address for permanent use by a DHCP client.
A new feature in Windows Server 2012 R2 called policy based assignment allows for even greater flexibility.
B)
Policy based assignment allows the policy to be scoped to a MAC address and IP range C.
D)
A DHCP server offers its services to the DHCP clients based on the availability of MAC address filtering.
Once the Allow filter is set, all DHCP operations are based on the access controls (allow/deny).
http://blogs.technet.com/b/teamdhcp/archive/2012/08/22/granular-dhcp-serveradministration-using-dhcppolicies-in-windows-server-2012.aspx
http://technet.microsoft.com/en-us/library/hh831538.aspx
http://technet.microsoft.com/en-us/library/ee405265(v=ws.10).aspx