Eavesdropping emanations

CompTIA Security+ Question H-66

Full disk encryption is MOST effective against which of the following threats?

A. Denial of service by data destruction
B. Eavesdropping emanations
C. Malicious code
D. Theft of hardware

Answer: D

Explanation:
Full-disk encryption encrypts the data on the device. This feature ensures that the data on the device cannot be accessed in a useable form should the device be stolen. However, it does not prevent the theft of hardware it only protects data should the device be stolen.