Answer:
The technician needs to adjust the quality of service tool.
Step-by-step explanation:
Quality of Service (QoS) tool is a feature in routers and switches which prioritizes traffic so that more important traffic can pass first which results in an improved performance for critical network traffic.
So whenever a complaint is made to the technician that a particular user is using much of the browsing speed which is slowing down the browsing speed of others, The technician needs to adjust the Quality of Service tool of the router that allows the router to share the bandwith among users.