Which of the following memory types is non-volatile?
ROM
Non-volatile memory retains its stored data even when the power supply is switched off.
ROM (Read-Only Memory) is non-volatile — it permanently stores essential data such as the boot/BIOS firmware, which must survive power-off.
RAM (Random Access Memory) is volatile and loses its contents when powered down; the CPU is the processor (not a memory type) and PCB (Printed Circuit Board) is the board that holds components, not a memory.
Hence, the non-volatile memory is ROM.
Which rewritable optical disc format allows users to erase and update data multiple times?
One Exabyte is equal to ______.
Which of the following memory is volatile?
Which of the following needs to be refreshed to retain data even when power is on (electric current flows)?
Which of the following is NOT an external memory?