单项选择题
A.allows multiple switches to be managed as A single device.
B.eliminates the need to purchasesmartnet on individual switches in the stack
C.allowscisco smart switches to be incorporated into the stack
D.enables switches in multiplewring closets to provide failover for each other
多项选择题 What are three current business factors that are influencing customer decisions in making technology investments?（）
单项选择题 What ensures that voice packets are given priority throughout the network so that conversations arrive intact?（）
多项选择题 Content networking solutions improve access to which two types of content? （）