For acceptable voice calls, the packet error rate should be no higher than what value?（）

Which three of these are elements of the Cisco Unified Wireless Network architecture?（）

A. cell phones
B. remote access
C. mobility services
D. network management
E. network unification
F. network decentralization

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To ensure quality, what is the maximum end-to-end transit time in milliseconds on a voice network?（）

A.50
B.100
C.150
D.200
E.250

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