Within the service provider core network, which two QoS mechanisms are typically deployed on the P routers? (Choose two.)

Within the service provider core network, which two QoS mechanisms are typically deployed on the P routers? (Choose two.)
A . LLQ
B . traffic policing and remarking
C . WRED
D . traffic shaping
E . traffic classification and markings
F . link fragmentation and interleaving

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Answer: A,C