Question

what device would you use to amplify your wireless signal?
network access switch
dual - band n router
network router extender
wireless range extender

Explanation:

A wireless range extender is specifically designed to amplify and extend the coverage area of a wireless signal. A network access switch is used to connect devices within a local - area network. A dual - band N router provides wireless connectivity but not mainly for signal amplification. A network router extender is not a standard term for a device mainly used for signal amplification.

Answer:

D. wireless range extender