问题:
A . Lower-priority traffic is assigned short interframe wait-timers to allow higher-priority traffic access to the wireless network first.
B . Packets that are not assigned to a specific access category are categorized by default as the background access category.
C . The WMM standard was implemented after the 802.11e standard was approved to provide support for non 802.11e devices.
D . WMM is a Wi-Fi Alliance standard that was implemented before the 802.11e standard was approved.
E . WMM uses Enhanced DCF (EDCF) to stipulate fixed and random wait times for the different access classes.
● 参考解析
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