フリー問題

問題文

Plant data must reach the corporate analytics platform, and no corporate traffic may enter the control network. Which technical arrangement fits the requirement?

選択肢

1. The requirement fits physically stronger perimeter filtering, because a filtered two way path retains reachable inbound route inside the plant implementation.
2. The requirement fits physically stronger perimeter filtering, because a filtered two way path retains theoretically reliable restoration coverage inside the plant implementation.
3. The requirement fits oneway transfer devices, because a filtered two way path retains theoretically reliable restoration coverage inside the plant implementation.
4. The requirement fits oneway transfer devices, because a filtered two way path retains reachable inbound route inside the plant implementation.