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 transmission relies on a medium that can reliably carry signals, and in practice we use three main types: copper cables that carry electrical signals, fiber optics that carry pulses of light, and wireless channels that transmit via electromagnetic waves through the air. A hydrogen-based cable would need ionized hydrogen (a plasma) to conduct, but such a medium is unstable, hard to contain, and unsafe for widespread use. There are no practical standards, devices, or infrastructure to support data communication with hydrogen plasma, so it isn’t used. The other options—copper, fiber, and wireless—are well-established and widely deployed technologies.

Data transmission relies on a medium that can reliably carry signals, and in practice we use three main types: copper cables that carry electrical signals, fiber optics that carry pulses of light, and wireless channels that transmit via electromagnetic waves through the air. A hydrogen-based cable would need ionized hydrogen (a plasma) to conduct, but such a medium is unstable, hard to contain, and unsafe for widespread use. There are no practical standards, devices, or infrastructure to support data communication with hydrogen plasma, so it isn’t used. The other options—copper, fiber, and wireless—are well-established and widely deployed technologies.

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