Which of the following wireless standards uses frequencyhopp

Which of the following wireless standards uses frequency-hopping spread spectrum (FHSS) by default?

A. Bluetooth

B. 802.11a

C. 802.11b

D. 802.11g

Solution

A. Bluetooth

synchronization is allowed, 79 systems could be collocated theoretically, each one of them using at any moment in time, one of the 79 available frequencies. However, this would require expensive filters in the radio circuitry.