单选题Which set of classes correctly identifies the four traffic classes， from highest priority to lowest priority， specified in the 802.11e standard？（）A gold， silver， bronze， and platinumB platinum， gold， silver， and bronzeC titanium， gold， silver， and bronzeD voice and video， best effort， background， and scavengerE voice， video， best effort， and backgroundF voice， video， best effort， and scavenger
单选题
Which set of classes correctly identifies the four traffic classes， from highest priority to lowest priority， specified in the 802.11e standard？（）
A
gold， silver， bronze， and platinum
B
platinum， gold， silver， and bronze
C
titanium， gold， silver， and bronze
D
voice and video， best effort， background， and scavenger
E
voice， video， best effort， and background
F
voice， video， best effort， and scavenger
参考解析
解析：
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