フリー問題

問題文

A design review asks why several separate mechanisms are placed along one traffic flow when any single mechanism could already stop the traffic on its own. The reviewers want a statement that explains both how the mechanisms are arranged and what happens when one of them turns out to be misconfigured. Which statement fits?

選択肢

1. Reviewers place checks at the combined boundary, so one lapse yields the partial exposure on that one path.
2. Reviewers place checks at the combined boundary, so one lapse yields the entire exposure on that one path.
3. Reviewers place checks at the fenced boundary, so one lapse yields the entire exposure on that one path.
4. Reviewers place checks at the fenced boundary, so one lapse yields the partial exposure on that one path.