You are designing the QoS features for a large enterprise network that includes DMVPN. When
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would you need to configure QoS preclassify?
A. when you are marking packets with the DSCP bits
B. when you are marking packets with the TOS bits
C. when your service provider requires the DSCP bits be set
D. when the QoS policy cannot be based on DSCP ToS bits

Answer: D

Explanation: