フリー問題

問題文

A farm installs 60 soil probes that each report once per hour over a short range radio to a field unit. The field unit computes an hourly average per zone and sends one message per zone to the platform. Which element of the Networks of Things model does the field unit act as?

選択肢

1. In that model the field unit acts as the decision trigger.
2. In that model the field unit acts as the remote eUtility.
3. In that model the field unit acts as the communication channel.
4. In that model the field unit acts as the reading aggregator.