单选题The Cisco 521 Wireless Express Access Point used in the Smart Business Communications System can be configured to operate in which mode?（）Acontroller-based mode onlyBeither standalone mode or controller-based modeCstandalone mode only
单选题
The Cisco 521 Wireless Express Access Point used in the Smart Business Communications System can be configured to operate in which mode?（）
A
controller-based mode only
B
either standalone mode or controller-based mode
C
standalone mode only
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