单项选择题
A. reduction of processing in wireless controllers
B. distributed approach to authentication， encryption， and policy enforcement
C. provides security by blocking communication between access points and wireless clients
D. access point discovery， information exchange， and configuration
单项选择题 Refer to the exhibit. Which Virtual Router Redundancy Protocol （VRRP） statement is true about the roles of the master virtual router and the backup virtual router？（）
多项选择题 Refer to the exhibit. Which three statements accurately describe this GLBP topology？ （Choose three.）（）
单项选择题 WhichstatementabouttheLightweightAccessPointProtocol（LWAPP）istrue？（）