trevor is working as a network engineer at spring oaks high school. the school's management has been facing some issues while handling network traffic. trevor wants to check the bandwidth as he assumes that the issues faced by the management are related to bandwidth errors. which of the following technologies should trevor use to ensure some traffic gets priority over other traffic so the most important traffic gets through even during times of congestion? Congestion control
QoS
Flow control
Traffic shaping