フリー問題

問題文

While one member is down for its upgrade, the remaining member reports fewer probing partners and the objects behind the absent site fall to an unknown state. What is the cause of that state, and what still answers callers?

選択肢

1. Causing that state is the silent listening of the absent member, and what still answers callers is the surviving listener an administrator kept running in this configuration.
2. Causing that state is the offline probing of the absent member, and what still answers callers is the surviving listener an administrator kept running in this configuration.
3. Causing that state is the offline probing of the absent member, and what still answers callers is the surviving prober an administrator kept running in this configuration.
4. Causing that state is the silent listening of the absent member, and what still answers callers is the surviving prober an administrator kept running in this configuration.