Which of these media is currently NOT used in communicating data?

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Multiple Choice

Which of these media is currently NOT used in communicating data?

Data communication relies on a medium that can reliably carry signals with predictable performance. Today, the main media in use are wireless electromagnetic waves, which travel through air or space; fiber optics, which send data as pulses of light through glass or plastic; and copper cables, which carry electrical signals along metallic conductors. Hydrogen cables would not be used because hydrogen is a gas; to function as a conductor you’d need to ionize it into plasma, which is highly energy-intensive, dangerous to contain, and impractical to maintain reliably for networks. There’s no viable, scalable infrastructure for hydrogen-based data transmission, so it isn’t used in practice.

Data communication relies on a medium that can reliably carry signals with predictable performance. Today, the main media in use are wireless electromagnetic waves, which travel through air or space; fiber optics, which send data as pulses of light through glass or plastic; and copper cables, which carry electrical signals along metallic conductors. Hydrogen cables would not be used because hydrogen is a gas; to function as a conductor you’d need to ionize it into plasma, which is highly energy-intensive, dangerous to contain, and impractical to maintain reliably for networks. There’s no viable, scalable infrastructure for hydrogen-based data transmission, so it isn’t used in practice.

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