フリー問題

問題文

A telecom company hands a research group a file where each subscriber appears as a random code, and keeps the table linking codes to names on its own systems. Which pairing states the status of the handed file?

選択肢

1. The handed file is the anonymized version one while the table stays inside, and only destroying that table would make the split the unrecoverable boundary that the documentation could rely on.
2. The handed file is the pseudonymous version one while the table stays inside, and only destroying that table would make the split the unrecoverable boundary that the documentation could rely on.
3. The handed file is the pseudonymous version one while the table stays inside, and only destroying that table would make the split the restorable boundary that the documentation could rely on.
4. The handed file is the anonymized version one while the table stays inside, and only destroying that table would make the split the restorable boundary that the documentation could rely on.