Which of the following memory is non-volatile?

Correct option is A

ROM (Read-Only Memory) is a non-volatile memory type, which means it retains its data even when the power is turned off. ROM is primarily used to store firmware or permanent instructions for the system.
Important Key Points:
1. ROM: It is non-volatile, meaning the data stored in ROM is persistent, even when the power supply is turned off.
· Examples: BIOS, firmware in devices, etc.
2. Cache: Cache memory is volatile, meaning it loses its data when the power is turned off. Cache is used to store frequently accessed data for quick retrieval by the CPU.
3. RAM: RAM (Random Access Memory) is volatile. It loses its content when the power is turned off. RAM is used for temporary data storage during active processes.
Knowledge Booster:
· Option (b): Cache is volatile memory. It provides high-speed access to data but loses all data once the power is off.
· Option (c): This is incorrect because Cache is not non-volatile, only ROM is non-volatile.
· Option (d): RAM is also volatile, so it is incorrect.