单项选择题
YouarechargeswithimplementingasecurewirelessinstallationwhichwillprovideInternetaccesstoclientdevicesbutwillnotallowcommunicationsbetweenwirelessclients.Inadditionto implementingPSPForpeer-to-peerblockingonthewirelessside，whichofthefollowingactionsshouldyouperformonthewiredinfrastructure？（）
A.Takenoaction，youhaveachievedyourgoal.
B.ImplementaCiscoSecureIPSsensor.
C.Implementaprotectedportontheaccessswitches.
D.Implement802.1Xontheswitchports.
A.Inadditionto
B.Takenoaction，youhaveachievedyourgoal.
C.ImplementaCiscoSecureIPSsensor.
D.Implementaprotectedportontheaccessswitches.
E.Implement802.1Xontheswitchports.