单选题How does weighted random early detection （WRED） prevent packet loss？（）Aincreases link capacityBincreases buffer space to accommodate bursts of traffic from delay-sensitive applicationsCprovides prioritized forwarding for drop-sensitive applicationsDdrop lower priority packets before congestion occursEseparates traffic into as many as 64 queues that can be uniquely prioritized
单选题
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
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