Which of the following is an advantage of fiber optic as a telemetry transmission medium?

• A. Low maintenance and simple installation.
• B. Susceptible to electromagnetic interference.
• C. High bandwidth, low loss.
• D. No need for signal conditioning.

Answer: (C)

The main idea here is that fiber optic links offer the ability to move a lot of data with minimal loss. Because the signal travels as light through glass, attenuation is very low, so signals can travel long distances without getting weak. This low loss combines with the enormous data-carrying capacity of light to provide high bandwidth, especially when you use techniques like wavelength-division multiplexing to send multiple channels at once. That combination—much more data per second and less signal degradation over distance—is what makes fiber optic a standout choice for telemetry.

Other options don’t capture this core advantage. While fiber does resist electrical interference, the statement that it’s susceptible to EMI is incorrect. Installation and maintenance can actually be more nuanced with fiber due to connectors and splicing, so it isn’t universally low-maintenance or simple. And even with optical links, you still need appropriate transceivers and conditioning to convert signals to and from light; so saying there’s no need for signal conditioning isn’t accurate.