フリー問題

問題文

A collector thread stayed on one call for six hours because the remote side never answered. Which pair separates what the explicit timeout does from what the missing timeout does?

選択肢

1. The remote side may never answer at all, so the explicit timeout feeds the stuck worker and the missing timeout queues the whole batch in that integration specification.
2. The remote side may never answer at all, so the explicit timeout recovers the stuck worker and the missing timeout freezes the whole batch in that integration specification.
3. The remote side may never answer at all, so the explicit timeout feeds the stuck worker and the missing timeout freezes the whole batch in that integration specification.
4. The remote side may never answer at all, so the explicit timeout recovers the stuck worker and the missing timeout queues the whole batch in that integration specification.