What is the encryption approach that protects contents by encrypting individual files?

• A. Disk level encryption
• B. Mobile device encryption
• C. Email encryption
• D. File level encryption

Answer: (D)

File-level encryption protects data by securing individual files rather than the entire storage device. Each file gets its own encryption, often with its own key or password, so only the selected files are protected and accessible to those with the correct key. This approach provides granular control, allowing you to encrypt sensitive documents without locking down everything on the drive. In contrast, disk-level encryption enciphers the whole volume, which protects all data at rest but doesn’t offer per-file selectivity. Email encryption specifically targets messages and attachments, not arbitrary files on a device. Mobile device encryption protects the data stored on the device as a whole, not on a file-by-file basis.