What type of network technology utilizes light pulses to transmit data?

The correct answer is fiber optics, which is a network technology that uses light pulses to transmit data. Fiber optic cables consist of thin strands of glass or plastic that carry information in the form of light. This method of data transmission allows for much higher speeds and greater bandwidth compared to traditional copper wire methods. The use of light pulses enables fiber optics to cover longer distances with minimal signal loss and interference, making it an ideal choice for high-speed internet connections and data communications.

In contrast, copper wires transmit data through electrical signals, which can be affected by electromagnetic interference and suffer from signal degradation over longer distances. Wi-Fi utilizes radio waves for wireless communication, while Ethernet typically refers to wired networks that employ copper cabling to connect devices. Each of these technologies has its strengths and weaknesses, but fiber optics stands out specifically for its use of light pulses to facilitate data transfer.