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 haven’t been changed by
hashing a file and comparing the hashes after a suspected change.