Question 325Electricity & Electronics - Assistant Engineer

The correct answer is D) Fiber-optic. Fiber-optic cables offer the greatest immunity to electromagnetic "noise" or interference compared to the other cable types listed. This is because fiber-optic cables transmit data using light pulses through thin glass or plastic fibers, rather than electrical signals through metal wires. Light is not susceptible to electromagnetic interference, making fiber-optic cables the most reliable and secure option for data communication. The other cable types, such as coaxial, shielded twisted pair, and unshielded twisted pair, use electrical signals and are more vulnerable to electromagnetic interference, which can degrade the signal quality and data transmission.