Which two statements are true about WRED? (Choose two.)
- WRED will use the average queue depth of an interface when determining if a packet should be dropped.
- WRED uses the IP precedence or DSCP marking of a packet when determining if a packet should be dropped.
- WRED does not support ECN.
- WRED uses a tail drop system for its queue buffers.
- WRED will drop packets marked AFx1 more aggressively than it will drop packets marked AFx3 from the queue.
Explanation: Weighted random early detection (WRED) is a congestion avoidance mechanism. Different IP precedence and DSCP values each have RED profiles, which determine the probability of packet discard based on the average queue depth of an interface.
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