Where are diagnostic and boot up routines stored?

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Multiple Choice

Where are diagnostic and boot up routines stored?

Explanation:
Boot-time and diagnostic routines must be available immediately at power-up and survive every reboot. They are firmware stored in non-volatile memory so they persist without needing a separate storage load. ROM is the place that holds this early-stage code, providing a stable, fixed set of instructions that initializes hardware and starts the boot process, such as performing the POST checks. RAM can't hold these routines permanently since its contents disappear when power is removed, making it unsuitable for boot code. Flash memory can store firmware and is commonly used to update BIOS/UEFI in modern systems, but traditionally these boot-time routines reside in ROM. NVRAM holds configuration data, not the executable boot code.

Boot-time and diagnostic routines must be available immediately at power-up and survive every reboot. They are firmware stored in non-volatile memory so they persist without needing a separate storage load. ROM is the place that holds this early-stage code, providing a stable, fixed set of instructions that initializes hardware and starts the boot process, such as performing the POST checks. RAM can't hold these routines permanently since its contents disappear when power is removed, making it unsuitable for boot code. Flash memory can store firmware and is commonly used to update BIOS/UEFI in modern systems, but traditionally these boot-time routines reside in ROM. NVRAM holds configuration data, not the executable boot code.

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