Study for the Internet of Things (IOT102) Test. Access comprehensive flashcards and multiple choice questions, each with hints and explanations. Get prepared for your exam!

Multiple Choice

Infrared signals are used for which type of communication range?

Infrared signals are used for short-range, line-of-sight communication. Infrared light travels in straight lines and is quickly attenuated by distance, obstacles, and ambient light, so reliable transmission typically occurs only over a few meters. That’s why devices like TV remotes or short-range IR links are designed for proximity use. For longer distances, radio frequency wireless technologies are employed because they’re less affected by obstacles and can carry signals much farther. So the best answer is short-range communication.

Infrared signals are used for short-range, line-of-sight communication. Infrared light travels in straight lines and is quickly attenuated by distance, obstacles, and ambient light, so reliable transmission typically occurs only over a few meters. That’s why devices like TV remotes or short-range IR links are designed for proximity use. For longer distances, radio frequency wireless technologies are employed because they’re less affected by obstacles and can carry signals much farther. So the best answer is short-range communication.