单项选择题
How does weighted random early detection （WRED） prevent packet loss？（）
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
相关考题
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单项选择题
Whichtwostatementsaretrueabouttheprotocolsthatareusedfortransmittingvoicetraffic？（）
A.RTP multiplexing is used to keep multiple phone conversations separate
B.RTP provides end-to-end delivery services for voice traffic
C.UDP is used to ensure a reliable transmission from sender to receiver
D.RTP is used to provide resource reservation for the voice stream
E.UDP provides multiplexing -
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？（）
A.best-effort delivery
B.ingress committed rate （ICR）
C.shaping and policing
D.egress committed rate （ECR）
E.integrated Services （IntServ）
F.differentiated services （DiffServ） -
多项选择题
WhichtwoCiscorouterfunctionalplanesareprotectedbyControlPlanePolicing（COPP）？（）
A.data plane
B.control plane
C.service plane
D.management plane
E.hyper plane
