Refer to the exhibit.
You are configuring the S1 switch for the switchport connecting to the client computer. Which
option describes the effect of the command mls qos map cos-dscp 0 8 16 24 32 40 46 56?
A.
Voice traffic is excluded from the default priority queue.
B.
Voice packets are given a class selector of 5.
C.
Video conferencing is marked CS3.
D.
Voice packets are processed in the priority queue.
The default CoS to DSCP mappings are shown below:
Default CoS-to-DSCP Map
CoS Value
DSCP Value
0
0
1
8
2
16
3
24
4
32
5
40
6
48
7
56
In our example, we see that COS 6 is mapped to DSCP, not the default of DSCP 48 as shown above. DSCP 46 is Expedited Forwarding (EF), which is typically used for voice traffic, and this
value has not been included in this class map.
Not sure what I am missing here. You reference a class map but I don’t see any class map. All I see is is the command mapping COS 6 to EF.