Full disk encryption protects __.
A. selected computers in a LAN
B. incoming Internet connections
C. a drive or device
D. a selected folder or file
The correct answer and explanation is :
The correct answer is C. a drive or device.
Explanation:
Full disk encryption (FDE) is a security feature designed to protect the entire contents of a hard drive or storage device by encrypting the data stored on it. This encryption occurs at the disk level, meaning that everything on the device, including the operating system, applications, and user data, is encrypted. The key difference between full disk encryption and other encryption methods is its comprehensive coverage of the entire storage device, as opposed to selective encryption of specific files or folders.
When FDE is enabled, the disk’s data is encrypted in such a way that only users with the correct decryption key (usually a password or encryption key) can access the data. This means that even if the physical device is stolen or accessed without authorization, the data remains unreadable to anyone who does not have the proper credentials. For example, if a laptop is stolen and it has full disk encryption enabled, the thief will not be able to access any data stored on the laptop without the encryption key, making the data effectively protected.
FDE is particularly beneficial in environments where sensitive information is stored on portable devices like laptops, smartphones, or external drives, as these devices are more prone to theft or loss. It is also used to comply with data protection regulations, such as the General Data Protection Regulation (GDPR) or Health Insurance Portability and Accountability Act (HIPAA), which mandate encryption for certain types of sensitive data.
In contrast, options A, B, and D are incorrect because:
- A. selected computers in a LAN: This is not the scope of full disk encryption, which applies to individual drives or devices, not to a network of computers.
- B. incoming Internet connections: Full disk encryption does not protect against threats from network traffic or incoming connections; it focuses on data at rest.
- D. a selected folder or file: This refers to file-level encryption, not full disk encryption, which secures the entire device rather than specific files or folders.