In which three ways does QoS provide better network service VoIP quality? (Choose three.)

QoS maximizes and leverages priority queuing rather than minimizing it - priority queuing is a core mechanism QoS uses to favor latency-sensitive traffic like voice.

QoS manages network congestion using queuing mechanisms such as CBWFQ and LLQ that ensure voice packets are serviced before lower-priority data traffic during periods of high utilization.

QoS improves loss characteristics by prioritizing voice packets in queues so they are dropped last, directly reducing the packet loss that degrades VoIP call quality.

QoS supports dedicated or guaranteed bandwidth through traffic policing and shaping, ensuring sufficient capacity is always available for voice streams regardless of competing traffic.

QoS assigns and enforces traffic priorities; it does not decrease them - decreasing priorities would harm, not help, VoIP quality.

QoS does not increase packet size; VoIP actually uses small packets deliberately to minimize serialization delay and latency.