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Which of the following WLAN protocols is in the 5GHz band with a MAXIMUM data rate of 54Mbps?（）
- A、802.11a
- B、802.11b
- C、802.11g
- D、802.11n
参考答案
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Increase the Layer 2 and Layer 3 security of the WLANC
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Add new services （such as voice） over the WLAN
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