Certified Ethical Hacker – CEH – 312-50 – Question008

Bluetooth uses which digital modulation technique to exchange information between paired devices?


A. PSK (phase-shift keying)
B. FSK (frequency-shift keying)
C. ASK (amplitude-shift keying)
D. QAM (quadrature amplitude modulation)

Correct Answer: A

Explanation:

Phase shift keying is the form of Bluetooth modulation used to enable the higher data rates achievable with Bluetooth 2 EDR (Enhanced Data Rate). Two forms of PSK are used: p/4 DQPSK, and 8DPSK.

References: http://www.radio-electronics.com/info/wireless/bluetooth/radio-interface-modulation.php