問題文
A utility compares the physical layer of NB-IoT with that of LoRa, since both claim to reach deep into buildings. Which pair states how the NB-IoT side earns that depth and how the LoRa side earns it?
選択肢
- The two long-range methods earn depth in different ways, so the NB-IoT side wins with the extra spectra and the LoRa side rides on the sweeping ramp in that specification.
- The two long-range methods earn depth in different ways, so the NB-IoT side wins with the extra copy and the LoRa side rides on the sweeping ramp in that specification.
- The two long-range methods earn depth in different ways, so the NB-IoT side wins with the extra copy and the LoRa side rides on the sweeping tones in that specification.
- The two long-range methods earn depth in different ways, so the NB-IoT side wins with the extra spectra and the LoRa side rides on the sweeping tones in that specification.