How does RAM differ from ROM in terms of volatility and typical usage?

How does RAM differ from ROM in terms of volatility and typical usage?

• A. RAM is volatile and used for temporary data; ROM is non-volatile and stores permanent instructions such as firmware.
• B. ROM is volatile and used for temporary data; RAM is non-volatile and stores permanent instructions.
• C. RAM is non-volatile and stores permanent instructions; ROM is volatile and stores temporary data.
• D. RAM and ROM have identical volatility and usage.

Answer: (A)

The key idea is how memory behaves when power is removed and what it’s used for. RAM is volatile, meaning it loses all stored data when the power is turned off. It’s used to hold data and instructions that the CPU is actively using while programs run—things like working data, the operating system’s active processes, and program code loaded into memory for quick access. ROM, on the other hand, is non-volatile and retains its contents without power. It stores permanent or semi-permanent instructions, such as firmware that initializes hardware and boots the system. Modern ROM-like memories (flash) are writable but still non-volatile, which is why they’re used for firmware storage.

The key idea is how memory behaves when power is removed and what it’s used for. RAM is volatile, meaning it loses all stored data when the power is turned off. It’s used to hold data and instructions that the CPU is actively using while programs run—things like working data, the operating system’s active processes, and program code loaded into memory for quick access. ROM, on the other hand, is non-volatile and retains its contents without power. It stores permanent or semi-permanent instructions, such as firmware that initializes hardware and boots the system. Modern ROM-like memories (flash) are writable but still non-volatile, which is why they’re used for firmware storage.