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Bluetooth uses ________

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Bluetooth uses ________

(a) CDMA

(b) Frequency hopping

(c) QPSK

(d) QAM

The question was asked during an internship interview.

Query is from Reduction of Noise in section Modulation of Analog Communications

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The correct choice is (b) Frequency hopping

For explanation I would say: Bluetooth is a wireless technology. It is used for exchanging data over short distances. It usually uses frequency hopping, in which the transmitter changes the carrier frequency with respect to a specific pattern.

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