多项选择题
A.do more with less
B.provide a unified tool for all business processes
C.influence competitive advantage and business agility through faster decision-making and new business processes and models
D.eliminate miscommunication
E.reduce the need to personalize communications with customers
F.transform your business and organization and be greener
单项选择题 Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）
单项选择题 Which WLAN device is often used to make wireless connections between buildings or campuses?（）
单项选择题 Which software-based security threat is typically spread from user to user via e-mail?（）