問題文
An IoT design compares a sub gigahertz radio with a radio in the crowded band just above two gigahertz. Which pair states what the lower frequency carries and what the higher frequency suffers as it crosses a building?
選択肢
- The two bands move in opposite directions on the same rule, so the lower frequency carries the longer wavelength and the higher frequency suffers the higher absorption in that specification.
- The two bands move in opposite directions on the same rule, so the lower frequency carries the longer payload and the higher frequency suffers the higher impedance in that specification.
- The two bands move in opposite directions on the same rule, so the lower frequency carries the longer payload and the higher frequency suffers the higher absorption in that specification.
- The two bands move in opposite directions on the same rule, so the lower frequency carries the longer wavelength and the higher frequency suffers the higher impedance in that specification.