Question 93Electricity & Electronics - 1st Asst/Chief
70% to passWhich of the following data communication cable types offers the greatest immunity to electromagnetic "noise"?
AFiber-optic
BUnshielded twisted pair
CCoaxial (coax)
DShielded twisted pair
AI Explanation
The correct answer is A) Fiber-optic. Fiber-optic cables offer the greatest immunity to electromagnetic "noise" because they transmit data using light rather than electrical signals. Light signals are not affected by electromagnetic interference (EMI) or radio frequency interference (RFI), which can corrupt electrical signals in other cable types like unshielded twisted pair (B) or coaxial (C) cables. Shielded twisted pair (D) cables have better noise immunity than unshielded twisted pair, but still cannot match the complete immunity of fiber-optic cables.
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