请教以下客户端NLB设置？为何为B？
You have an Exchange Server 2013 organization that contains two Client Access servers named CAS1 and CAS2.
You deploy a Network Load Balancing (NLB) cluster for Exchange client access. You configure all
HTTPS connections to the cluster to be equally balanced between both servers.
In the next few weeks, you plan to replace CAS1.
You need to ensure that all HTTP connections to the cluster are redirected to CAS2 only. The HTTPS
connections must continue to be balanced equally between both servers.
What should you do?
A. Modify the cluster operation mode.
B. Create a port rule for port 80.
C. Set the priority of CAS1 to a higher number than CAS2.
D. Set the priority of CAS2 to a higher number than CAS1.
