Exam 200-301 topic 1 question 966 discussion

Traffic policing does not cause bursting at all, in fact it imposes a ceiling so it limits it if anything. Traffic policing enforcement causes packets to be either dropped or re-marked. https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.html

I hate QoS

The two actions taken as a result of traffic policing are: B. dropping C. remarking Traffic policing involves controlling the rate of traffic flow on a network. Dropping refers to discarding or denying packets that exceed the allowed rate, while remarking involves changing the packet's priority markings or specific fields based on the policing rules.

B & C are correct

■ It measures the traffic rate over time for comparison to the configured policing rate. ■ It allows for a burst of data after a period of inactivity. ■ It is enabled on an interface, in either direction, but typically at ingress. ■ It can discard excess messages but can also re-mark the message so that it is a candidate for more aggressive discard later in its journey.

Remarking and dropping

Two actions that are taken as a result of traffic policing: Dropping or Discarding Excess Traffic: When traffic policing is enforced and the incoming traffic rate exceeds the allowed rate (defined by a specified threshold), the excess traffic is dropped or discarded. This action helps in maintaining network quality of service (QoS) and prevents congestion caused by an excessive influx of traffic. Remark or Re-mark Traffic: When traffic policing is applied, the excess traffic can also be remarked or re-marked with a lower priority or a specific Differentiated Services Code Point (DSCP) value. This remarking helps ensure that the exceeded traffic is treated with a lower priority in subsequent stages of the network, allowing for better resource allocation and management. These actions collectively help in managing network congestion, prioritizing traffic, and ensuring that network resources are utilized efficiently.

B and C correct

Traffic policing propagates bursts. When the traffic rate reaches the configured maximum rate, excess traffic is dropped (or remarked). The result is an output rate that appears as a saw-tooth with crests and troughs. In contrast to policing, traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time. The result of traffic shaping is a smoothed packet output rate.

"BC" are correct

B and C are the correct answers!!

AB is correct