Which statement best differentiates RAM and ROM in terms of volatility and their use?

Which statement best differentiates RAM and ROM in terms of volatility and their use?

• A. RAM stores firmware; ROM stores active programs.
• B. ROM is non-volatile and stores firmware and essential startup instructions.
• C. RAM is volatile; ROM is non-volatile.
• D. ROM is volatile and stores data temporarily.

Answer: (B)

Think of memory by two key traits: how it behaves when power is removed and what it stores. RAM is used to hold the stuff the CPU is actively using right now—operating system processes, programs, and data you’re working with. Because RAM is volatile, all that information is lost when the power goes off. ROM, in contrast, holds the firmware—the low-level software that initializes hardware and starts the boot process. This data is non-volatile, so it remains even without power, providing essential startup instructions each time the computer boots. That combination—ROM being non-volatile and storing firmware and startup instructions, and RAM being volatile and storing active programs and data—best captures how these types differ in both volatility and use.

Think of memory by two key traits: how it behaves when power is removed and what it stores. RAM is used to hold the stuff the CPU is actively using right now—operating system processes, programs, and data you’re working with. Because RAM is volatile, all that information is lost when the power goes off. ROM, in contrast, holds the firmware—the low-level software that initializes hardware and starts the boot process. This data is non-volatile, so it remains even without power, providing essential startup instructions each time the computer boots. That combination—ROM being non-volatile and storing firmware and startup instructions, and RAM being volatile and storing active programs and data—best captures how these types differ in both volatility and use.