A.WMM using DCF
B.WMM using EDCAF
C.802.1e using DCF
D.802.1e using EDCAF
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A.shared key authentication is considered more secure than open authentication
B.shared key authentication is considered less secure than open authentication
C.if the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data
D.if the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data
E.if the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data
A.5
B.15
C.25
D.35
E.45
F.55
A.bursty
B.constant
C.bandwidth intensive
D.small packet sizes
E.time-sensitive
F.retransmittable
A.IP
B.TCP
C.RTP
D.UDP
E.H323
F.CRTP
A.the VoIP endpoints have the intelligence to set up and control calls
B.Call setup and control functionality is centralized in one call agent or cluster
C.Call setup and control resides in call agents that are distributed throughout the network
D.Each VoIP device has separate call control， voice packetization， and transport mechanisms
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