What QoS step must occur before packets can be marked?
- classifying
- shaping
- queuing
- policing
Explanation: Before a packet can be marked, it must first be classified. Classification is the process of analyzing network traffic flows to determine which specific class they belong to based on defined criteria. Once the traffic class is determined through classification, the packet can then be marked with a priority value in its header (such as DSCP or CoS) so that other QoS tools can identify and treat the traffic according to the established policy.
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