You want to mark all VoIP packets in the HW network with the DSCP value of EF.
According to the differentiated services RFCs, traffic with Expedited Forwarding Per Hop Behavior should be marked as:
A . DSCP decimal 36
B . IP ToS of 0xEF
C . IP Experimental ECN
D . DSCP decimal 5
E . Binary Value of 101110
Answer: E