The real answer is likely D which truly is 95 feet. The bs EC Council answer is probably A based on out dated and incorrect material. Another example of a terrible question written by incompetent people.
the answer is definetly D.
802.16 provides up to 50 km (31 miles) of linear service area range and allows users connectivity without a direct line of sight to a base station. The technology also provides shared data rates up to 75 Mbit/s
The maximum range of each standard varies, depending on environmental factors such as obstructions and interference from other sources of radio frequency signals. The maximum range of 802.11a wireless was approximately 95 feet with throughput of up to 54 megabits per second, while 802.11b was capable of transmitting up to 150 feet at 11 Mbps. The 802.11g standard extended that range to 170 feet at the same speed as 802.11a; 802.11n extended the maximum range to 230 feet and throughput to a maximum of 600 Mbps. 802.11ac routers provide similar range but increase throughput to a theoretical maximum of 1.33 gigabits per second.
WiMAX operates in between 10 and 66 GHz Line of Sight (LOS) at a range up to 50 km (30 miles) and 2 to 11GHz non Line-of-Sight (NLOS) typically up to 6 - 10 km (4 - 6 miles) for fixed customer premises equipment (CPE).
According to the course material, the range are like Daniel8660 says:
802.11a Range 35- 100 meters
802.11b Range 35- 140 meters
802.11g Range 38- 140 meters
802.16 (WiMAX) Range 1- 6 miles
150 feet are about 50 meters, so I'd say that all the answers are confusing, but the clearly wrong option is 802.16 (WiMAX), so I go with A.
I think the D is the correct one:
The maximum range of 802.11a wireless was approximately 95 feet with throughput of up to 54 megabits per second, while 802.11b was capable of transmitting up to 150 feet at 11 Mbps.
WiMAX operates in between 10 and 66 GHz Line of Sight (LOS) at a range up to 50 km (30 miles) and 2 to 11GHz non Line-of-Sight (NLOS) typically up to 6 - 10 km (4 - 6 miles) for fixed customer premises equipment (CPE).
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