What unique characteristic defines a fiber cable?

A fiber cable is uniquely characterized by its construction using tiny tubes made of glass or plastic that transport light signals. This technology allows for the transmission of data over long distances with minimal attenuation and interference. The use of light gives fiber optics the advantage of higher bandwidth capabilities compared to traditional metal wires, which transmit electrical signals. Fiber cables are especially beneficial in environments where high-speed internet and data transfer are critical, as they enable faster and more reliable communication.

The other options refer to characteristics of different types of cables. Metal wires that conduct electricity pertain to coaxial or traditional copper Ethernet cables, while thicker cables may be relevant to certain types of insulated copper cables. Finally, copper connectors are used in many electrical cables but are not a defining feature of fiber optic cables, which instead utilize light-based technology for data transmission.