CyberCertPrepMobile Security FundamentalsMobile OS ArchitectureEASYFree question
What is the main security purpose of full-disk encryption (FDE) or file-based encryption (FBE) on mobile devices?
- A.To speed up storage read/write operations
- B.To encrypt data transmitted over Wi-Fi
- C.To prevent apps from reading each other's data
- D.To protect data stored on the device if it is lost or stolen, making the data unreadable without the correct credentials/keys
Why D is correct
Both Android (FBE, mandatory since Android 10) and iOS (hardware encryption via Secure Enclave) encrypt device storage. Without the passcode/PIN (which derives encryption keys), data is unreadable. This protects against physical theft and forensic extraction.
Know someone studying for Mobile Security Fundamentals? Send them this one.