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Bluetooth operates in which band?

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Bluetooth operates in which band?

(a) Ka Band

(b) L Band

(c) Ku Band

(d) 2.4 GHz ISM Band

I had been asked this question in unit test.

This intriguing question originated from Bluetooth and Personal Area Networks (PANs) topic in section Modern Wireless Communication Systems of Wireless/Mobile

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Best answer
Right choice is (d) 2.4 GHz ISM Band

Easy explanation: Bluetooth is a radio technology operating in 2.4 GHz frequency band. Bluetooth is best suited for low-bandwidth applications like transferring sound data with telephones (i.e. with a Bluetooth headset) or byte data with hand-held computers (transferring files) or keyboard.

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