____ transmission systems transmit tightly focused beams of radio signals from one ground-based microwave transmission antenna to another.
a. Satellite
b. Cellular
c. Downlink
d. Terrestrial microwave
Answer: D
____ transmission systems transmit tightly focused beams of radio signals from one ground-based microwave transmission antenna to another.
a. Satellite
b. Cellular
c. Downlink
d. Terrestrial microwave