The BIOS is typically stored in which type of memory?

The BIOS is typically stored in which type of memory?

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

Answer: (D)

The main idea here is that the BIOS is firmware that must be available even when the computer isn’t powered. It initializes hardware and starts the boot process, so it needs to be stored in non-volatile memory that retains its contents without power. RAM is volatile and loses its data when power is off, and cache is a small, fast, also volatile memory used for speeding up CPU operations. Storage refers to the hard drive or SSD where data lives, not to the firmware that runs first. ROM is non-volatile memory that holds firmware, so it’s the appropriate place for the BIOS. In many modern systems, the BIOS actually lives in flash memory, a type of ROM, but the key idea is non-volatile firmware memory. Therefore, ROM is the right choice.

The main idea here is that the BIOS is firmware that must be available even when the computer isn’t powered. It initializes hardware and starts the boot process, so it needs to be stored in non-volatile memory that retains its contents without power. RAM is volatile and loses its data when power is off, and cache is a small, fast, also volatile memory used for speeding up CPU operations. Storage refers to the hard drive or SSD where data lives, not to the firmware that runs first. ROM is non-volatile memory that holds firmware, so it’s the appropriate place for the BIOS. In many modern systems, the BIOS actually lives in flash memory, a type of ROM, but the key idea is non-volatile firmware memory. Therefore, ROM is the right choice.