Which command enables L2 QoS support in all VLANs (including the native VLAN)?
A.
switchport priority extend cos
B.
mls qos trust dscp
C.
mls qos rewrite ip dscp
D.
switchport trunk native vlan tag
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That command just enable tagging on native vlan, so native vlan frames have EthII header with tagging and of course cos bits
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