Disk Encryption is a technique for encrypting all stored data on a device. Which encryption alternatives are used to encrypt contents of specific files or columns?

Disk Encryption is a technique for encrypting all stored data on a device. Which encryption alternatives are used to encrypt contents of specific files or columns?

• A. File-Level Encryption
• B. Column-Level Database Encryption
• C. Disk Encryption is a technique that encrypts all stored data on a device
• D. A method to back up data

Answer: (C)

Encryption scope matters: there are approaches that protect everything on the device versus approaches that protect only specific content. Disk encryption protects all data stored on the device by encrypting the entire disk or volume. It provides broad protection but doesn’t offer selective encryption of individual files or database columns. To encrypt contents of specific files, use file-level encryption, which encrypts the contents of entire files. For databases, column-level encryption targets only selected columns, enabling encryption of sensitive fields while leaving other data in plaintext. These targeted methods are used when you need granular control and potentially better performance for non-sensitive parts. The option about backing up data does not describe an encryption approach.

Encryption scope matters: there are approaches that protect everything on the device versus approaches that protect only specific content. Disk encryption protects all data stored on the device by encrypting the entire disk or volume. It provides broad protection but doesn’t offer selective encryption of individual files or database columns. To encrypt contents of specific files, use file-level encryption, which encrypts the contents of entire files. For databases, column-level encryption targets only selected columns, enabling encryption of sensitive fields while leaving other data in plaintext. These targeted methods are used when you need granular control and potentially better performance for non-sensitive parts. The option about backing up data does not describe an encryption approach.