Which two QoS mechanisms provide congestion management? (Choose two.)

Class-Based Weighted Fair Queuing (CBWFQ) and Priority Queuing (PQ) are both congestion management tools. CBWFQ allows you to define traffic classes and assign bandwidth guarantees, ensuring critical traffic receives its share during congestion. PQ prioritizes traffic based on strict priority levels, meaning higher-priority traffic is sent before lower-priority traffic, potentially starving lower-priority queues. Frame Relay Traffic Shaping (FRTS) and Committed Access Rate (CAR) are congestion avoidance mechanisms, not management. Policy-Based Routing (PBR) is a routing mechanism, not directly related to QoS congestion management.