Exam-style question
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Which medium allows data to be transmitted without any physical connection, making it ideal for mobile devices?.
- A.Fiber optic cable
- B.Coaxial cable
- C.Twisted pair
- D.Wireless radio
Model answer
What a good answer should say
- Wireless radio
Explanation
Why this works
Both wireless radio and fibre optic cable can transmit data, but fibre optic requires a physical cable. The key difference is that wireless radio uses electromagnetic waves to carry signals through the air, enabling mobility.
Wireless radio is therefore the medium suited to mobile devices.
Common mistake
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