Final answer:
Robots use wireless technologies like WiFi and Bluetooth, which operate in the 2.4-GHz frequency band, to communicate wirelessly.
Step-by-step explanation:
Robots must use wireless technologies such as WiFi and Bluetooth for all wireless robot communication. These technologies function in the 2.4-GHz range, which is a frequency band used for radio communication between devices. For example, Bluetooth is a standard that allows devices to connect wirelessly for various purposes, from linking headphones and audio earpieces to establishing a hands-free connection between a driver's cell phone and the vehicle, enabling the driver to answer phone calls without physically handling the phone.