The ratio of signal power to background noise power is called what?

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Multiple Choice

The ratio of signal power to background noise power is called what?

The signal-to-noise ratio measures how strong the desired signal is relative to the background noise. It tells you how much the signal stands out above the noise floor, which determines how reliably the information can be recovered at the receiver. A higher SNR means the signal is clearer and easier to demodulate, leading to fewer errors. In practice, this is often expressed in decibels (dB) as 10 log10(signal power / noise power). Other choices describe different concepts: attenuation is loss of signal strength along the path, WDM refers to carrying multiple wavelengths on the same fiber, and solid metallic conduit is a physical protective duct for cables.

The signal-to-noise ratio measures how strong the desired signal is relative to the background noise. It tells you how much the signal stands out above the noise floor, which determines how reliably the information can be recovered at the receiver. A higher SNR means the signal is clearer and easier to demodulate, leading to fewer errors. In practice, this is often expressed in decibels (dB) as 10 log10(signal power / noise power). Other choices describe different concepts: attenuation is loss of signal strength along the path, WDM refers to carrying multiple wavelengths on the same fiber, and solid metallic conduit is a physical protective duct for cables.

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