フリー問題

問題文

The signaling between the two site edges never comes up, although both edges are configured for each other and both are healthy inside their own site. Which cause fits that silence?

選択肢

1. That silence points to drift comparison reporting through written schedule administration.
2. That silence points to stale arrival record through written schedule administration.
3. That silence points to duplicate detection suppressing through written schedule administration.
4. That silence points to blocked outer reach through written schedule administration.