問題文
A provider is considering a filter that refuses any prefix no registry has handed out. An engineer has to record what keeping such a filter demands, and what the recommendation is for an operator who cannot meet that demand. Which statement is correct?
選択肢
- It demands one list taken from the registry once and no more, and an operator who cannot keep the filter current should not take up the approach at all.
- It demands constant updates and therefore automation, and an operator who cannot keep the filter current should not take up the approach at all.
- It demands one list taken from the registry once and no more, and an operator who cannot keep the filter current should take up the approach and accept everything when it fails.
- It demands constant updates and therefore automation, and an operator who cannot keep the filter current should take up the approach and accept everything when it fails.