单项选择题
A.less than 10 percent
B.10 to 15 percent
C.15 to 20 percent
D.25 to 30 percent
单项选择题 WhichclassofCiscoaccesspointsoperateunderIEEE802.3afpower？（）
单项选择题 Toprovideefficientroamingbetweenthecells，whichpercentofcelloverlapisrecommendedfor2.4GHzand5GHzaccesspoints？（）
单项选择题 UnderU.S.regulatorydomain，whichchannelplandeliversthepropercoverageinalargelecturehallthatrequiresfouraccesspoints？（）