How does traffic policing respond to violations?

The correct answer is C. Excess traffic is dropped. Traffic policing enforces a committed information rate (CIR) by immediately dropping packets that exceed the defined threshold - this is the 'exceed' or 'violate' action. Unlike traffic shaping, which buffers excess traffic in a queue and retransmits it at a smoothed rate…

Infrastructure and Quality of Service

Question

Options

AAH traffic is treated equally.
BExcess traffic is retransmitted.
CExcess traffic is dropped.
DExcess traffic is queued.

How the community answered

(34 responses)

A
9% (3)
B
3% (1)
C
85% (29)
D
3% (1)

Explanation

Traffic policing enforces a committed information rate (CIR) by immediately dropping packets that exceed the defined threshold - this is the 'exceed' or 'violate' action. Unlike traffic shaping, which buffers excess traffic in a queue and retransmits it at a smoothed rate, policing has no buffer and discards non-conforming packets outright. This results in potential TCP retransmissions from the sender but keeps the rate hard-capped. Option B (retransmit) describes shaping behavior, option D (queue) also describes shaping, and option A is unrelated.

Topics

#Traffic Policing#QoS#Bandwidth Management#Network QoS

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