Question
Which of the following makes data unreadable without a required key?
- A. Anonymization
- B. Role-based access control
- C. Encryption Correct
- D. Masking
Explanation
Encryption transforms data into ciphertext that cannot be read until it is decrypted with the correct key. Masking and anonymization hide or remove identifying values but do not depend on a key to reverse them, and role-based access control restricts who can reach the data rather than making the data itself unreadable.
