多项选择题
A. DMVPN
B. MPLS VPN
C. IPv6 VPN
D. Cisco IOS SSL VPN
E. site-to-site VPN
F. Cisco Easy VPN
多项选择题 WhichthreeareintegratedSmartApplicationsincludedwiththeCiscoUnifiedCommunications500Series？（）
单项选择题 WhatstatementistrueofhowacustomeracquiresIntrusionPreventionandContentSecurityservicesinaCiscosecuritysolution？（）
多项选择题 WhatarethreecharacteristicsthatbuyersofCiscoSmallBusinessrouterstypicallylookfor？（）