Question

Data anonymization aims to protect privacy by removing sensitive information. Which of the following best describes a technique used in data anonymization?


Merging all data sets into a single, large database for easier analysis.



Allowing public access to anonymized datasets while keeping the original data secure.



Storing all data in its original format but requiring high levels of user authorization for access.



Using a de-identification technique like replacing a person's name with a random alphanumeric code.

Answer 1

Using a de-identification technique like replacing a person's name with a random alphanumeric code.

This describes a common anonymization/pseudonymization method (replacing direct identifiers). Note, full anonymization often also requires removing or masking quasi-identifiers and other steps to prevent re‑identification.