Bluetooth has three classes, namely:

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Multiple Choice

Bluetooth has three classes, namely:

Bluetooth device classes define how strong the radio signal is and the practical communication range. The three classes describe different power levels: Class 1 is the most powerful and can operate up to roughly 100 meters, Class 2 is common for everyday devices and typically reaches about 10 meters, and Class 3 has the shortest range, around 1 meter. Because this question lists Class 1, Class 2 and Class 3 together with the corresponding ranges of 100 m, 10 m, and 1 m, it reflects the standard way Bluetooth ranges are categorized, so this is the correct description. Other options mix up concepts that aren’t Bluetooth device classes: ISM refers to frequency bands used by various technologies, not Bluetooth ranges; the remaining pairings aren’t standard Bluetooth classifications and don’t define the same power-range relationship.

Bluetooth device classes define how strong the radio signal is and the practical communication range. The three classes describe different power levels: Class 1 is the most powerful and can operate up to roughly 100 meters, Class 2 is common for everyday devices and typically reaches about 10 meters, and Class 3 has the shortest range, around 1 meter. Because this question lists Class 1, Class 2 and Class 3 together with the corresponding ranges of 100 m, 10 m, and 1 m, it reflects the standard way Bluetooth ranges are categorized, so this is the correct description. Other options mix up concepts that aren’t Bluetooth device classes: ISM refers to frequency bands used by various technologies, not Bluetooth ranges; the remaining pairings aren’t standard Bluetooth classifications and don’t define the same power-range relationship.

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