You are designing a QoS solution for a large enterprise network that uses DMVPN. In which situation should the QoS pre-classify feature be used?
A) When your service provider requires the DSCP bits be set
B) When the QoS policy cannot be based on DSCP bits
C) When you are marking packets with the ToS bits
D) When you are marking packets with the DSCP bits

Question

Quizplus · Accepted Answer

QoS pre-classify is used when the QoS policy cannot be based on DSCP bits because it allows classification of packets before they are encapsulated, which is necessary when the encapsulation would otherwise obscure the original packet headers.

You Are Designing a QoS Solution for a Large Enterprise