What type of memory can be written to and read from, but typically loses its data when power is turned off?

The type of memory that can be written to and read from, but typically loses its data when power is turned off, is referred to as random-access memory (RAM). This type of memory is volatile, meaning it requires a constant power supply to retain the data stored within it. When the power is turned off, all information in RAM is lost.

RAM is essential for temporary data storage that the CPU needs for processing tasks. It allows for quick read and write operations, which enable efficient performance of applications and processes while a device is powered on.

In contrast, read-only memory (ROM) is non-volatile and retains its data even when the power is off, which makes it unsuitable for this description. Magnetic memory, typically found in hard drives, is also non-volatile and retains data without power. Cache memory, while it serves the purpose of providing quick access to frequently used data, is a subset of RAM and follows the same volatility characteristic. Therefore, RAM is the most appropriate answer to this question.