フリー問題

問題文

A payment ledger is spread across three regions. During a network split between regions the operators must choose between refusing writes and accepting writes that may conflict later. Which statement about this case is correct?

選択肢

1. Refusing writes protects agreement, and accepting writes protects restorability.
2. Refusing writes protects utilization, and accepting writes protects restorability.
3. Refusing writes protects agreement, and accepting writes protects responsiveness.
4. Refusing writes protects utilization, and accepting writes protects responsiveness.