350-801 · Question #491
CAR is an example of which technique?
The correct answer is A. traffic policing. CAR (Committed Access Rate) is a Cisco IOS traffic policing mechanism. Traffic policing enforces a rate limit on traffic by dropping or re-marking packets that exceed the defined rate - it does not buffer or delay packets. CAR uses a token bucket algorithm to measure traffic…
Question
CAR is an example of which technique?
Options
- Atraffic policing
- Btraffic signaling
- Ctraffic conditioning
- Dtraffic shaping
How the community answered
(24 responses)- A88% (21)
- B8% (2)
- D4% (1)
Explanation
CAR (Committed Access Rate) is a Cisco IOS traffic policing mechanism. Traffic policing enforces a rate limit on traffic by dropping or re-marking packets that exceed the defined rate - it does not buffer or delay packets. CAR uses a token bucket algorithm to measure traffic against a committed rate and burst size, then takes a configured action (drop, transmit, or remark) on conforming or exceeding traffic. This is distinct from traffic shaping, which buffers excess traffic to smooth it to the configured rate rather than dropping it. CAR is therefore a policing, not a shaping, tool.
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