问题：
Your network contains an internal network and a perimeter network. The internal network contains an Active Directory forest. The forest contains a single domain.
You plan to deploy 10 Edge Transport servers on the perimeter network.
You need to recommend a solution for the Edge Transport server deployment. The solution must meet the following requirements：
.Allow administrators to apply a single security policy to all Edge Transport servers .Reduce the administrative overhead that is required to manage servers .Minimize the attack surface of the internal network
What should you recommend？（）
A . Implement Network Policy and Access Services （NPAS）.
B . Implement Active Directory Federation Services （AD FS）.
C . Create a new Active Directory domain in the internal forest， and then join all Edge Transport servers to the new domain.
D . Create an Active Directory forest in the perimeter network， and then join all Edge Transport servers to the new domain.
Your network contains an internal network and a perimeter network. The internal network contains an Active Directory forest. The forest contains a single domain.
You plan to deploy 10 Edge Transport servers on the perimeter network.
You need to recommend a solution for the Edge Transport server deployment. The solution must meet the following requirements：
.Allow administrators to apply a single security policy to all Edge Transport servers .Reduce the administrative overhead that is required to manage servers .Minimize the attack surface of the internal network
What should you recommend？（）
● 参考解析
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