Which two statements about WiMAX technology are true? (Choose two.)

Which two statements about WiMAX technology are true? (Choose two.)
A . WiMAX is defined by 802.11i.
B . Typically, fixed WiMAX networks have a higher-gain directional antenna installed near the client.
C . WiMAX is capable of working as a long-range system over several miles.
D . WiMAX works only for licensed frequencies.

Answer: B, C