How does QoS traffic shaping alleviate network congestion?
A . It drops packets when traffic exceeds a certain bitrate.
B . It buffers and queue packets above the committed rate.
C . It fragments large packets and queues them for delivery.
D . It drops packets randomly from lower priority queues.
Answer: B
Explanation:
Reference: https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.html
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