Which of these techniques is PRIMARILY used to ensure data integrity?

Question

Options

• AMessage Digest
• BContent Encryption
• CLabeling
• DBackups

• A
  91% (41)
• B
  7% (3)
• D
  2% (1)

Explanation

The primary function of message digesting is to ensure data integrity (which can be defined as maintaining and ensuring the accuracy and consistency of data throughout its lifecycle). Message digesting is a technique that uses cryptographic hash functions, such as MD5 or SHA-256, to create a unique, fixed-length summary, or "digest," of the original message data. For example, when a file is downloaded from a Web site, the Web site can provide a hash value (message digest) for the file. After downloading, the user can perform the same hash function on the file. If the resulting message digest matches the one provided by the Web site, the integrity of the file is confirmed because it has not been altered during transmission. As for the other options, content encryption is used primarily for confidentiality, not integrity. While it can provide some level of integrity, its primary purpose is to prevent unauthorized access to data. Labeling is used for data classification, not integrity. It helps identify the sensitivity of data and apply appropriate protection measures. Finally, backups do not actively prevent data corruption or tampering, and may not even be able to detect changes in the data unless a comparison with the original data is made.

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