HardwareQuestion 8 of 100
What does BIOS or UEFI firmware do when a computer first powers on?
a.It defragments the hard drive
b.It connects the computer to the internet
c.It encrypts all user files
d.It initializes hardware and starts the boot process
Explanation
BIOS or its modern successor UEFI is firmware stored on the motherboard that runs first at power-on. It performs a power-on self-test, initializes hardware, and then hands control to the bootloader to load the operating system. UEFI adds features like faster boot and support for larger drives.
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