Which of the following types of encryption will help in protecting files on a PED?

Mobile device encryption encrypts the entire storage of a personal electronic device, ensuring that files remain protected if the device is lost or stolen. This is the most direct and appropriate encryption type for protecting data at rest on a PED, as it operates at the device storage layer rather than in transit or within a specific application.

Transport layer encryption (such as TLS) protects data in transit across a network and does not protect files stored locally on a device at rest.

An encrypted hidden container protects specific volumes or partitions rather than the full device file system, and is not the standard approach for securing all files on a PED.

Database encryption protects structured data within a database system and is not applicable to general file protection on a personal electronic device.