Match the parameter with the correct description. (Not all options apply.)

Based on the image you’ve provided, which contains descriptions of various Quality of Service (QoS) parameters, the correct matches for each parameter are as follows:

1. CIR (Committed Information Rate): the policed traffic rate as defined in the traffic contract.
2. Tc (Time Interval): the time interval over which the committed burst of traffic is sent.
3. Bc (Burst Size): Not explicitly described here, but it generally refers to the amount of data that is allowed to be sent during the Tc time interval in a traffic policing or shaping scenario.
4. CoS (Class of Service): allows for grouping of similar types of traffic for traffic shaping and policing.

These QoS parameters are typically used in the configuration of traffic policing and shaping policies to manage network bandwidth and performance.