【单选题】
You are charged with implementing a secure wireless installation which will provide internet <br /> access to client devices but will not allow communications between wireless clients.<br /> In addition to implementing pspf or peer-to-peer blocking on the wireless side，which of the following actions should you perform on the wired infrastructure？（）
A、implement a cisco secure ips sensor.
B、implement 802.1x on the switch ports.
C、take no action， you have achieved your goal.
D、implement a protected port on the access switches.
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