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單項(xiàng)選擇題

What is the WMM user priority of the packets going downstream to the client when the client does not support TSPEC but the Cisco WLC has ACM enabled and WLAN priority is set to Platinum?（）

A.background
B.best effort
C.voice
D.video

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多項(xiàng)選擇題

Which three are interframe spaces defined in 802.11?（）

A.SIFS
B.PIFS
C.DIFS
D.LIFS
E.NAV
F.CWmin

單項(xiàng)選擇題

What is the payload size of a wireless IP phone in a call using G.711 codec?（）

A.20 bytes
B.60 bytes
C.120 bytes
D.160 bytes

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