Discussion
Out of the following types of memory, which one retains the data even after the power is turned off?
Answer: D
The memory that keeps its data without power is ROM.
Read-only memory is non-volatile: its contents, such as the firmware that starts the computer, are written in at manufacture or by special programming and stay when the power is switched off.
Static RAM, dynamic RAM and cache memory are all volatile. Dynamic RAM is the main memory, static RAM is faster and is used to build cache memory, and all of them lose their contents when power is cut.
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