单项选择题
A.increases link capacity
B.increases buffer space to accommodate bursts of traffic from delay-sensitive applications
C.provides prioritized forwarding for drop-sensitive applications
D.drop lower priority packets before congestion occurs
E.separates traffic into as many as 64 queues that can be uniquely prioritized
单项选择题 Whichtwostatementsaretrueabouttheprotocolsthatareusedfortransmittingvoicetraffic？（）
单项选择题 Refer to the wxhibit . what QOS model should be used to reserve the requested bandwidth and delay needed for each allowed VOIP call regardless of changing networkconditions？（）
多项选择题 WhichtwoCiscorouterfunctionalplanesareprotectedbyControlPlanePolicing（COPP）？（）