Your network contains two servers named Server1 and Server2 that run Windows Server
2012 R2. Server1 is a DHCP server that is configured to have a scope named Scope1.
Server2 is configured to obtain an IP address automatically.
In Scope1, you create a reservation named Res_Server2 for Server2.
A technician replaces the network adapter on Server2.
You need to ensure that Server2 can obtain the same IP address.
What should you modify on Server1?

A.
The Name Protection settings of Scope1

B.
The MAC address of Res_Server2

C.
The Advanced settings of Res_Server2

D.
The Network Access Protection Settings of Scope1

Explanation:
Media access control (MAC) address authorization functions in the same way as automatic
number identification (ANI) authorization, but it is used for wireless clients and clients
connecting to your network by using an 802.1X authenticating switch. Since the network
adapter was replaced, you need to modify the MAC address on Server1 to ensure that
Server2 can obtain the same IP address.
References:
http://technet.microsoft.com/en-us/library/dd197535%28v=WS.10%29.aspx