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.

View Answer

Answer: BC

Explanation:

WiMAX is defined by 802.16, that is intended for wireless "metropolitan area networks". WiMAX can provide broadband wireless access (BWA) up to 30 miles (50 km) for fixed stations, and 3 – 10 miles (5 ­15 km) for mobile stations. In contrast, the WiFi/802.11 wireless local area network standard is limited in most cases to only 100 – 300 feet (30 – 100 m). Fixed WiMAX networks typically have a higher -gain directional antenna installed near the client (customer) which results in greatly increased range and throughput. Using 802.11 with high-gain antenna can bridge last-mile gaps, but they require more power. WiMAX operates on both licensed and non-licensed frequencies, providing a regulated environment and viable economic model for wireless carriers. In particular, WiMax operates on the 10-to 66-GHz frequency band, so it doesn’t interfere with 802.11 LANs.