NBAR is used to provide which QoS function?

A.
classification

B.
policing

C.
CBWFQ bandwidth guarantees

D.
shaping

Explanation:
NBAR addresses IP QoS classification requirements by classifying application-level protocols so
that QoS policies can be applied to the classified traffic. NBAR addresses the ongoing need to
extend the classification engine for the many existing and emerging application protocols by
providing an extensible Packet Description Language (PDL). NBAR can determine which protocols
and applications are currently running on a network so that an appropriate QoS policy can be
created based upon the current traffic mix and application requirements.