フリー問題

問題文

The link between two sites has to be sized for a thirty minute recovery point objective, and the total stored capacity is far larger than any link could carry. Which pair states what the needed bandwidth follows, and what the measurement has to count?

選択肢

1. The link has to clear each period before the next, so the needed rate follows the changed blocks and the measurement counts the daily provision in that specification.
2. The link has to clear each period before the next, so the needed rate follows the changed blocks and the measurement counts the daily turnover in that specification.
3. The link has to clear each period before the next, so the needed rate follows the changed retention and the measurement counts the daily turnover in that specification.
4. The link has to clear each period before the next, so the needed rate follows the changed retention and the measurement counts the daily provision in that specification.