Which IEEE standard defines wireless networking in the 5GHz band with
speeds of up to 54 Mbps?

A.
802.3

B.
802.11b

C.
802.5

D.
802.11a

Explanation:
The correct answer is 802.11a.
Answer . 802.5 defines a token-passing ring access method.
Answer 802.11b defines a wireless LAN in the 2.4 GHz band with speeds up to 11 Mbps.
Answer 802.3 describes a bus topology using CSMA/CD at 10 Mbps.