Which of the following guarantees that data in a file have not changed?

A. Inspecting the modified date of the file

B. Encrypting the file with symmetric encryption

C. Using stringent access control to prevent unauthorized access

D. Creating a hash of the file, then comparing the file hashes

Explanation:

A hashing algorithm can be used to mathematically ensure that data havent been changed by hashing a file and comparing the hashes after a suspected change.