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Crucial Exams

CompTIA Data+ DA0-002 (V2) Practice Question

A hospital analytics team must share a large set of patient treatment records with an external university researcher. Under GDPR Recital 26, the data will fall outside the scope of data-protection law only when the data subjects are not identifiable by any means that are reasonably likely to be used. Which data-preparation strategy BEST achieves true anonymization before release?

  • Remove names and mask the last four digits of each Social Security number, but keep full postcode and exact date of birth for analysis.

  • Generalize quasi-identifiers (for example, turn exact birth dates into five-year age bands) and publish only aggregated records in which each row represents at least 50 patients, with no key linking back to individuals.

  • Replace every patient identifier with a random string and store the mapping table on a secure internal server.

  • Encrypt the entire data set with AES-256 and give the researcher only the ciphertext while the hospital retains the decryption key.

CompTIA Data+ DA0-002 (V2)
Data Governance
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