Which memory retains data after power is removed?

Which memory retains data after power is removed?

• A. RAM
• B. ROM
• C. Cache
• D. Registers

Answer: (B)

This question is about memory that can keep its data without power. That quality is non-volatile memory. ROM is non-volatile, so its contents stay intact even when the computer is turned off, which is why firmware stored in ROM remains available after power-down. In contrast, RAM, cache, and registers are volatile; they use power to retain information, so their data is lost when the power is removed.

This question is about memory that can keep its data without power. That quality is non-volatile memory. ROM is non-volatile, so its contents stay intact even when the computer is turned off, which is why firmware stored in ROM remains available after power-down. In contrast, RAM, cache, and registers are volatile; they use power to retain information, so their data is lost when the power is removed.