Mechatronics End-of-Pathway (EOP) Practice Test

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Fiber optic cable is used for which purpose in automation networks?

A copper pair used for data

A wireless radio link for control signals

A shielded coax used for data

High speed data transmission medium. It contains tiny glass or plastic filaments that carry light beams

Fiber optics serve as a high-speed data transmission medium in automation networks. They use tiny glass or plastic filaments to guide light signals from transmitter to receiver. This setup supports very high bandwidth and operation over long distances with minimal signal loss, and it is inherently immune to electromagnetic interference from motors and other equipment common in factories. Because the signal is carried as light rather than electrical current, fiber also offers safety advantages in certain environments and reduces the risk of corrosion or crosstalk. In short, the purpose described is exactly what fiber optic cables provide: fast, reliable data transmission through light in guided filaments.