多项选择题
A.produces higher margins than product sales along
B.generate recurring revenue
C.strengthens customer loyalty
D.renews automatically for the lifetime of the product
E.helps customers speed architectural planning and design
F. eliminates network problems
单项选择题 Telepresence and video conferencing have been an increasingly important component of the overall collaboration marker, which indicator is the best measure of the continued importance of these technologies going forward?（）
单项选择题 What is the Cisco collaboration per-person licensing option that simplifies purchasing and provides customers with maximum flexibility?（）
多项选择题 Which three of these are benefits of telepresence and video collaboration?（）