多项选择题
A.Delay should be no more than 10 ms.
B.Loss should be no more than1 percent.
C.Jitter should be less then 40 ms.
D.Managed bandwidth is strongly recommended for voice control traffic.
多项选择题 WhichthreeoftheseareelementsoftheCiscoUnifiedWirelessNetworkarchitecture？（）
单项选择题 WhichoftheseisaLayer2transportarchitecturethatprovidespacket-basedtransmissionoptimizedfordatabasedonadual（counter-rotating）ringtopology？（）
单项选择题 WhichoftheseLayer2accessdesignsdoesnotsupportVLANextensions？（）