Multiple choice

Alteration of data up to the extent that it is not usable unless the changes are undone, is

  1. biometrics

  2. compression

  3. encryption

  4. ergonomics

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Encryption transforms data into an unreadable format that can only be reversed with the correct decryption key. Without decryption, the altered data is completely unusable for its intended purpose.

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