Which two actions are performed by the Weighted Random Early Detection mechanism? (Choose two)

Which two actions are performed by the Weighted Random Early Detection mechanism? (Choose two)
A . It drops lower-priority packets before it drops higher-priority packets
B . It can identify different flows with a high level of granularity
C . It guarantees the delivery of high-priority packets
D . It can mitigate congestion by preventing the queue from filling up
E . IT supports protocol discovery

View Answer

Answer: AD

Explanation:

加权随机先期检测（ WRED ： Weighted Random Early Detection ）是将随机先期检测与优先级排队结合起来，这种结合为高优先级分组提供了优先通信处理能力。

当某个接口开始出现拥塞时，它有选择地丢弃较低优先级的通信，而不是简单地随机丢弃分组。