Can the latest version of Linux allow you to take a memory image simply by dd'ing the contents of /dev/mem device?

• A. False
• B. True
• C. Only with root privileges
• D. Only on 32-bit systems

Answer: (A)

In modern Linux, grabbing a memory image by simply dd-ing the /dev/mem device isn’t a reliable or generally allowed approach. The system restricts access to physical memory to protect sensitive data and maintain stability, and many distributions either disable /dev/mem or require special privileges that aren’t routinely granted. Even if you could read /dev/mem, you’d be getting a live, potentially inconsistent snapshot of memory as the system runs, which isn’t suitable for forensics. For a sound memory capture you use a purpose-built method (like a kernel-based memory acquisition tool such as LiME or a crash/VM-dump mechanism) that can produce a consistent image without destabilizing the system. So, the statement is false.