Which transmission medium is least affected by electromagnetic interference?

Options

  • A. Twisted-pair cable
  • B. Coaxial cable
  • C. Optical fibre
  • D. Unshielded copper cable
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. Optical fibre

Detailed Explanation

Correct Answer: Optical fibre.

Optical fibre carries data using light rather than electrical signals. Therefore, it is immune to electromagnetic interference and is suitable for electrically noisy environments.