Both radio wave and ____ technologies are used for short distance wireless communications within an office, a building, or between buildings.
A)infrared
B)microwave
C)ultraviolet
D)gamma ray

Question

Quizplus · Accepted Answer

Infrared technology is used for short distance wireless communications within an office, a building, or between buildings. Microwave technology is used for longer distance wireless communications, such as for cell phone signals or satellite communication. Ultraviolet and gamma ray technologies are not used for wireless communications as they are part of the electromagnetic spectrum with much higher frequencies and energies, and have other applications such as in medicine or astronomy.

Both Radio Wave and ____ Technologies Are Used for Short