Which IEEE protocol defines wireless transmission in the 5 GHz band with data rates up to 54 Mbps?

A.
IEEE 802.11b

B.
IEEE 802.11g

C.
IEEE 802.11a

D.
IEEE 802.15

Explanation:
IEEE 802.11a specifies high-speed wireless connectivity in the 5 GHz band using Orthogonal
Frequency Division Multiplexing with data rates up to 54 Mbps. IEEE 802.11b specifies highspeed
wireless connectivity in the 2.4 GHz ISM band up to 11 Mbps. IEEE 802.11g is a proposed standard
that offers wireless transmission over relatively short distances at speeds from 20 Mbps up to 54
Mbps and operates in the 2.4 GHz range (and is therefore expected to be backward-compatible with
existing 802.11b-based networks). IEEE 802.15, defines Wireless Personal Area Networks (WPAN),

such as Bluetooth, in the 2.4-2.5 GHz band. Source: IEEE Wireless Working Groups
(grouper.ieee.org).