单项选择题
You are at a client site. It is a medium-sized business and needs a Cisco Catalyst switch that offers high availability and security. What type of Catalyst switches would you recommend？（）
A. Catalyst 2960 Series B. Catalyst 3750 Series C. Catalyst 4900 Series D. Catalyst 6500 Series
单项选择题 WhichcompanionswitchisrecommendedtobeinstalledwithCiscoSmartBusinessCommunicationsSystem？（）
多项选择题 CiscoCatalyst4500Seriesswitchesareattractivetomedium-sizecampuseswithgrowthopportunitiesduetotheswitchesenhancedsecurityandwhichtwootherfeatures？（）
