You are designing a server infrastructure to support a new stateful application.
The server infrastructure must meet the following requirements:
Use two servers, each with two NIC cards and 32 GB of RAM.
Provide access to the application in the event of the failure of a single server.
Provide the ability to scale up the application.
Minimize the attack surface of each server.
Minimize server disk space requirements.
You need to design a server infrastructure that meets the requirements.
What should you recommend? (More than one answer choice may achieve the goal. Select the BEST answer.)

A.
Perform a Server Core installation of Windows Server 2008 R2 Standard Edition. Configure both servers in
a failover cluster.

B.
Perform a Server Core installation of Windows Server 2008 R2. Configure both servers in a Windows
Network Load Balancing array,

C.
Install Windows Server 2008 R2 on both servers. Use DNS Round Robin to balance the load between the
servers.

D.
Install Windows Server 2008 R2 on both servers. Configure both servers in a Windows Network Load
Balancing array.

Explanation:
To minimize attack surface and disk space, Server Core installation is the suitable choice, which eliminate
choices C and D. Failover clustering is available in Enterprise and Datacenter, which eliminate choiceA.
http://en.wikipedia.org/wiki/Windows_Server_2008_R2#Editions