单项选择题
A.20 bytes
B.60 bytes
C.120 bytes
D.160 bytes
单项选择题 WhatcallperformancestatisticsarereportedontheCiscoWirelessIPPhone7921userinterface?（）
单项选择题 WhichstatementdescribesthecallbehavioroftheCiscoUnifiedWirelessIPPhone7921Gwhenit roamsfrom802.11bto802.11a?（）
多项选择题 WhichtwopiecesofinformationdoestheCiscoWLCv5.2clientmonitorfeatureprovideabouta VoWLANclient?（）