Which certification-based protocol is implemented for wireless QoS between an AP and a wireless client over RF media？（）
- A、WMM using DCF
- B、WMM using EDCAF
- C、802.1e using DCF
- D、802.1e using EDCAF
正确答案:B
答案解析:有
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Which certification-based protocol is implemented for wireless QoS between an AP and a wireless client over RF media？（）
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