You support a customer whose network environment includes Microsoft Lync Server 2013 and Lync
Phone Edition devices. Quality of Service (QoS) configuration has been changed recently and users
report voice quality issues when they use Lync Phone Edition devices. You need to configure QoS for
voice traffic to match the default QoS configuration of the Lync Phone Edition devices. What should
you do?

A.
Set the Voice 8021p value to 0.

B.
Set the Voice 8021p value to 40.

C.
Set the VoiceDiffServTag value to 0.

D.
Set the VoiceDiffServTag value to 40.