Which of the following frequencies does Bluetooth use?

The correct answer is C. 2.4GHz. Bluetooth operates in the 2.4GHz ISM (Industrial, Scientific, and Medical) radio band, specifically between 2.402GHz and 2.480GHz. It uses frequency-hopping spread spectrum (FHSS) to reduce interference within this band. This is the same general band used by 802.11b/g/n Wi-Fi…

Mobile devices

Question

Options

A900MHz
B1.8GHz
C2.4GHz
D5GHz

How the community answered

(38 responses)

A
5% (2)
B
5% (2)
C
87% (33)
D
3% (1)

Explanation

Bluetooth operates in the 2.4GHz ISM (Industrial, Scientific, and Medical) radio band, specifically between 2.402GHz and 2.480GHz. It uses frequency-hopping spread spectrum (FHSS) to reduce interference within this band. This is the same general band used by 802.11b/g/n Wi-Fi, which is why the two technologies can sometimes interfere with each other. 900MHz is used by older cordless phones, 1.8GHz is used by some cordless phone systems, and 5GHz is used by 802.11a/n/ac/ax Wi-Fi.

Topics

#Bluetooth#wireless frequency#2.4GHz

Community Discussion

No community discussion yet for this question.

Full 220-801 Practice