Which statement correctly describes fiber optics' immunity to external interference?

Fiber optics are known for their robust immunity to various forms of external interference, specifically radio frequency interference (RFI), electromagnetic interference (EMI), and noise. This immunity stems from the fundamental way that fiber optic technology transmits information: through light signals rather than electrical signals.

Because fiber optic cables transmit data using light, they do not conduct electricity, making them immune to electromagnetic fields that can disrupt electrical signals in traditional copper wiring. This characteristic is advantageous in environments where electrical noise is prevalent, such as near heavy machinery or radio transmitters. As a result, data transmission remains clear and reliable, unaffected by the surrounding electromagnetic activities.

Understanding the principles of fiber optics illuminates why this option is the most accurate. The technology's resilience to interference enables greater distances and higher data rates, making fiber optics a preferred choice in many telecommunications applications.