Which two statements are true about WRED? (Choose two.)

IT Questions BankCategory: CCNPWhich two statements are true about WRED? (Choose two.)

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.

Exam with this question: Quiz - QoS
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