フリー問題

問題文

The insurer's broker portal calls the platform's own request interface, while the platform configures the delivery tier beneath it. What does that layering protect when the tier's interface changes?

選択肢

1. The layering protects the inward contract, and exposing the underlying calls would rewrite every broker integration in that organization whenever the tier beneath changes.
2. The layering protects the upper contract, and exposing the underlying calls would rewrite every broker integration in that organization whenever the tier beneath changes.
3. The layering protects the upper contract, and exposing the outward calls would rewrite every broker integration in that organization whenever the tier beneath changes.
4. The layering protects the inward contract, and exposing the outward calls would rewrite every broker integration in that organization whenever the tier beneath changes.