多项选择题
A. reducing security breaches
B. using the Internet more
C. reducing upgrade charges
D. adopting new applications and services
单项选择题 Which statement best describes what Cisco Smart Care Service provides?（）
单项选择题 Choose the element that differentiates the Cisco SBCS solution from the competing Avaya IP Office and Nortel BCM 50 solutions.（）
多项选择题 The Cisco UC500 component of the Smart Business Communication System provides which three functions?（）