IEEE 802.11a achieves its increase in speed and flexibility over 802.11b by each of the following except ______________.
A) higher frequency
B) using less bandwidth
C) more transmission channels
D) a new multiplexing technique

Question

Quizplus · Accepted Answer

IEEE 802.11a achieves its increase in speed and flexibility over 802.11b by using a higher frequency (5 GHz), more transmission channels (up to 23 non-overlapping channels), and a new multiplexing technique (OFDM). However, it does not use less bandwidth - in fact, it uses a wider bandwidth than 802.11b (20 MHz versus 22 MHz).

IEEE 80211a Achieves Its Increase in Speed and Flexibility Over 802