Question
Select the answer that correctly completes the sentence.
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Explanation
Encrypting a file makes its data unreadable and unusable to unauthorized viewers. To read or use encrypted data it must be decrypted, which requires the appropriate secret key, so only viewers who have that key can read and use the data. Archiving, compressing and deduplicating change how data is stored, but none of them restrict who can read it by means of a key.
