How does RAM differ from ROM?

• A. RAM is permanent; ROM is temporary
• B. RAM is non-volatile; ROM is volatile
• C. RAM is for data storage; ROM is for program execution
• D. RAM is volatile; ROM is non-volatile

Answer: (D)

RAM, or Random Access Memory, is classified as volatile memory, meaning that it requires power to maintain the information stored within it. When the power is turned off, all data stored in RAM is lost. This characteristic makes RAM suitable for temporary data storage, allowing the computer to access and process data quickly while it is powered on.

On the other hand, ROM, or Read-Only Memory, is non-volatile, which means it retains its contents even when the power is turned off. Data stored in ROM is typically used to store firmware or system software, which is critical for booting and operating the computer.

The distinction between volatile and non-volatile memory is fundamental in understanding how computers manage data during operation. RAM is designed for quick read and write access, suitable for executing applications and processing data dynamically, while ROM serves a more permanent role in maintaining essential instructions that the system requires to function properly, even after a shutdown.