Consider the various uses for network devices like routers switches hubs repeaters etc. and how one or more of them

Consider the various uses for network devices like routers, switches, hubs, repeaters, etc. and how one or more of them would aid situations where network performance is degraded. Provide some details about your scenario, why you chose the particular device or devices to solve a poor network performance and reasons why the device would correct the situation. Which network media would be appropriate for the device(s) that you chose? Why were the other devices inappropriate in your opinion?