When a LAN switch port is configured with mls qos trust cos, if the pass-through dscp command
option isn’t present, how will the switch port treat incoming DSCP-marked frames?

A.
It will pass the DSCP-marked frames.

B.
It will re-mark the DSCP frames according to the CoS-to-DSCP mapping table.

C.
The port will re-mark the frames according to the DSCP-to-CoS mapping table.

D.
The switch port will convert the DSCP setting to CoS values and use that to select the egress
queue for the frame.