Modified deficit round robin supports which of these functionalities?

A.
priority queue

B.
weighted fair queues

C.
round-robin service of output queues

D.
LLQ

Explanation:
Modified Deficit Round Robin (MDRR) is a traffic latency control function. It allows the operators to guarantee traffic latency for differentiated flows by controlling the packet de-queuing process. Packet classification is based on IP Precedence. MDRR differs from DRR in that one of the eight available queues is designated as a low-latency queue. There are two basic modes of operation which govern how packets arede-queued from the low-latency queue in relation to other queues.