单项选择题
For acceptable voice calls, the packet error rate should be no higher than what value?（）
A.0.1% B.1% C.2.5% D.25%
多项选择题 Which three of these are elements of the Cisco Unified Wireless Network architecture?（）
单项选择题 To ensure quality, what is the maximum end-to-end transit time in milliseconds on a voice network?（）
多项选择题 Which two statements about Cisco Security Management Suite are correct?（）
