Exam-style question
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A university campus wants a high‑speed link between two buildings 200 m apart. The link must have very high bandwidth, minimal latency, and be immune to electromagnetic interference. Which media is best?.
- A.Fiber optic
- B.Copper coaxial
- C.Wireless
- D.DSL
Model answer
What a good answer should say
- Fiber optic
Explanation
Why this works
Rule: For short‑range links requiring very high bandwidth and low interference, choose media with high data rates and immunity to EMI. Substitution: short distance (200 m), very high bandwidth, low latency, EMI immunity.
Working: Fiber optic provides gigabit speeds, zero EMI, and negligible latency over 200 m. Answer: Fiber optic.
Conclusion: Fiber optic is the suitable media.
Common mistake
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