多项选择题
Which two of these Cisco Catalyst are distribution-area switches？ （）
A. Catalyst 2800/E Series B. Catalyst 3750 Series C. Catalyst 3900/E Series D. Catalyst 4500/E Series E. Catalyst 6500/E Series
单项选择题 WhatbestdescribesthefeaturesoftheCisco850Seriesrouters？（）
多项选择题 WhataretwosecurityfeaturesoftheCiscoSecureRouter500Series？（）
单项选择题 Afteraclienthasdevelopedasecuritypolicy，whatisrecommendedthattheydonext？（）
