is a technology used in WLAN in which sending and receiving devices have multiple antennas and transmit data over multiple streams to send data faster with few errors.

multiple input multiple output (MIMO).

Explanation:

Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.

Generally, the most commonly used electromagnetic wave technology in telecommunications is radio waves.

Radio waves can be defined as an electromagnetic wave that has its frequency ranging from 30 GHz to 300 GHz and its wavelength between 1mm and 3000m. Therefore, radio waves are a series of repetitive valleys and peaks that are typically characterized of having the longest wavelength in the electromagnetic spectrum.

Basically, as a result of radio waves having long wavelengths, they are mainly used in long-distance communications such as the carriage and transmission of data.

In Radio transmission and Networking, multiple input multiple output (MIMO) is a type of technology used in a wireless local area network (WLAN), in which both the sending (transmitter) and receiving (receiver) network devices have multiple antennas and are able to transmit data over multiple streams in a bid (effort) to send data faster with little or fewer errors and gain knowledge of the communications channel.

the answer is c. data centers

answer; always; never;