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3-95. When radio waves cannot pass through a large or dense object, this createsbchind the object a. refractive interference b. a shadow zone d. e. multipath interference spread spectrum propagation effects Both A and B 3-96. If a wireless transmitter and receiver are in the same room, walls can create even if they do not come directly between the two stations a. shadow zones b. multipath interference erse distance law attenuation inverse square law attenuation inv e. EMI 3-97. In WLANs, the most serious propagation effect is a. attenuation b. EM c. multipath interference d. shadow zones e. transmogrification 3-98 In WLANs, EMI may be produced by a. devices in nearby WLANs b. microwave ovens c. Both A and B d. Neither A nor B