You want your Brocade FastIron switch to recognize DSCP, TOS, 802.1p, and IP precedence bits
from an IP phone. What must you do first to ensure the QoS parameters are recognized by the
switch?

A.
Create an ACL to mark each packet with these QoS attributes.

B.
Set up the trust QoS command to honor them.

C.
Make sure there is a tagged VLAN for each port connecting to the IP phones.

D.
Mark the packets as they come in with the proper priority.