Refer to the exhibit.
How does a switch port that receives marked traffic from a Cisco IP phone use the mls qos trust
cos command?
A.
The CoS setting is modified according to the CoS-to-DSCP map.
B.
CoS is used to select the ingress and egress queues.
C.
For non-IP packets, the CoS is set to 7 and DSCP-to-CoS mapping is not applied.
D.
The DSCP-to-CoS map is applied.
Explanation:
mls qos trustcosdefines that cos setting is modified according to COSDSCP map.