Final answer:
A wireless repeater and a wireless access point boost Wi-Fi strength for wireless devices in areas of low signal quality.
Step-by-step explanation:
The two network devices that boost Wi-Fi strength for wireless devices in areas of low signal quality are wireless repeaters and wireless access points.
A wireless repeater picks up the Wi-Fi signal from the router and rebroadcasts it to extend the coverage area. It is placed within range of the router and the area with low signal quality.
A wireless access point connects wireless devices to a wired network, improving signal strength and coverage. It can be connected directly to the router or through a wired connection.