多项选择题
A. Unified advanced service
B. client devices
C. Catalyst switches
D. network management
E. mesh access points
F. VPN concentrator
多项选择题 Whatarethreeimportantsecurityissuesinanysmall，medium，orenterprisebusinessorganization？（）
多项选择题 WhichtwoseriesofCiscoCatalystswitches，whenplacedinthedistributionlayer，effectivelypasshighamountsofnetworktrafficbetweenthecoreandaccesslayerswhileaggregatingaccess？（）
多项选择题 WhichtwostatementbestdescribestheCiscoUnifiedWirelessNetwork？（）