Which transmission medium is completely immune to electromagnetic interference (EMI)?

Options

  • A. Coaxial cable
  • B. Shielded twisted pair
  • C. Optical fiber
  • D. Unshielded twisted pair
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. Optical fiber

Detailed Explanation

Correct Answer: Optical Fiber

  • Optical fiber carries information through light rather than electrical signals.
  • Therefore, electromagnetic fields do not affect its data transmission.
  • Copper cables can experience electromagnetic interference.