问题:
A . It must always be set on all QoS profile types because this sets the type of markings as either CoS or DSCP.
B . It is optional if the Cisco WLC attached switch operates on a trust DSCP model.
C . It must be set if the Cisco WLC attached switch operates on a trust CoS model.
D . It sets the EDCF queue used for the radio-transmitted frames.
● 参考解析
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