下列属性中,不属于WLAN的是
A.工作在ISM频段
B.MAC协议采用CSMA/CD
C.定义了两种组网结构:独立基本服务组(IBSS)和扩展服务组(ESS)
D.无线射频(RF)传输方法采用跳频扩频(FHSS)和直接序列扩频技术(DSSS)
正确答案是B
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