What are the three categories of tools that can be used in IP networks to implement QoS? (Choose three.)
- classification and marking
- integrated services
- congestion management
- differentiated services
- congestion avoidance
- best effort
Explanation: Best effort is the default packet forwarding design and provides no QoS. Differentiated services and integrated services are models of applying QoS mechanisms. Classification and marking, congestion management, and congestion avoidance are the three categories of QoS tools that are applied to IP networks.
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