Which QoS mechanism allows delay-sensitive data, such as voice, to be sent first before packets in other queues are sent?

CBWFQ
FIFO
LLQ

FCFS

Answers Explanation & Hints:

Low latency queuing (LLQ) adds a priority queue to CBWFQ from which delay-sensitive traffic, such as voice traffic, can be transmitted ahead of packets in other queues.

Which QoS mechanism allows delay-sensitive data, such as voice, to be sent first before packets in other queues are sent?

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