Final answer:
The type of wireless technology that bounces transmissions off walls and ceilings and is often used with TV remotes is infrared.
Step-by-step explanation:
The type of wireless technology that bounces transmissions off walls and ceilings to deliver signals from sender to receiver and is often used with TV remotes is infrared. TV remotes use modulated infrared beams to transmit signals, and these signals can bounce off walls and ceilings to reach the TV receiver.