Exam-style question
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Which medium provides the best protection against electromagnetic interference and is commonly used in high‑speed data links between servers?.
- A.Fiber optic cable
- B.Coaxial cable
- C.Twisted pair
- D.Wireless radio
Model answer
What a good answer should say
- Fiber optic cable
Explanation
Why this works
Both fibre optic and coaxial cable are shielded from EMI, but fibre optic uses light signals that are immune to electromagnetic interference. The key difference is that fibre optic offers superior EMI protection and higher bandwidth, making it the preferred medium for high‑speed server links.
Common mistake
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