A. C2950 B. C3750 C. ESW 500 D. SRW224G4
多项选择题CiscoCatalyst4500Seriesswitchesareattractivetomedium-sizecampuseswithgrowthopportunitiesduetotheswitchesenhancedsecurityandwhichtwootherfeatures？（）
A. enhanced multilayer software image B. connectivity to multiple types of WAN connections C. Cisco Unified Communications Manager D. QoS for converged networks E. modular， customizable components
