Which type of storage does not require power to maintain its data?

Non-volatile storage is the correct answer because it is designed to retain data even when the power is turned off. This type of storage is essential for keeping information intact and accessible without reliance on continuous power supply. Examples of non-volatile storage include hard drives, solid state drives (SSD), and flash drives, all of which maintain data integrity without needing an active power source.

In contrast, volatile storage, such as RAM (Random Access Memory), loses its data when power is cut off. Dynamic storage does not have a distinct definition in terms of data retention or power requirements and generally refers to how data is managed in certain contexts rather than to a specific type of storage. Cache storage, while often faster and used to temporarily store data for quick access, is typically volatile and, like RAM, does not maintain its contents without power.