Which memory type loses data when power is removed?

Which memory type loses data when power is removed?

• A. RAM
• B. ROM
• C. HDD
• D. Cache

Answer: (A)

Memory can be either volatile or non-volatile. Volatile memory loses all its data when power is removed, while non-volatile memory retains data without power. RAM is the classic example of volatile memory. It stores the data and instructions the CPU needs right now, but because it relies on power to maintain charge (in DRAM) or state (in SRAM), everything stored in RAM is lost when you shut down. ROM, HDD, and similar storage are non-volatile and keep their data without power. Cache is also volatile, but RAM is the standard reference point for this property, which is why it’s the best answer here.

Memory can be either volatile or non-volatile. Volatile memory loses all its data when power is removed, while non-volatile memory retains data without power.

RAM is the classic example of volatile memory. It stores the data and instructions the CPU needs right now, but because it relies on power to maintain charge (in DRAM) or state (in SRAM), everything stored in RAM is lost when you shut down. ROM, HDD, and similar storage are non-volatile and keep their data without power. Cache is also volatile, but RAM is the standard reference point for this property, which is why it’s the best answer here.