单项选择题
A.Class A
B.Class 1
C.Class 2
D.Class 3
E.Class 4
单项选择题 Toprovideefficientroamingbetweenthecells，whichpercentofcelloverlapisrecommendedfor2.4GHzand5GHzaccesspoints？（）
单项选择题 UnderU.S.regulatorydomain，whichchannelplandeliversthepropercoverageinalargelecturehallthatrequiresfouraccesspoints？（）
单项选择题 WhichCiscoaccesspointshouldbeusedforacustomersitethatrequestshardwaretosupportMaximalRatioCombiningindoors？（）