LFCS · Question #683
During a system boot cycle, what program is executed after the BIOS completes its tasks?
The correct answer is A. The bootloader. After the BIOS completes its initial hardware checks and initialization, it transfers control to the bootloader, which is responsible for loading the operating system.
Question
Options
- AThe bootloader
- BThe inetd program
- CThe init program
- DThe kernel
How the community answered
(29 responses)- A93% (27)
- B3% (1)
- C3% (1)
Why each option
After the BIOS completes its initial hardware checks and initialization, it transfers control to the bootloader, which is responsible for loading the operating system.
The BIOS (or UEFI firmware) performs Power-On Self-Test (POST) and initializes hardware, then identifies a bootable device and executes the bootloader program, typically found in the MBR or GPT, to continue the boot process.
The inetd program is a network services super-server that starts much later in the boot process, after the operating system kernel is loaded and network services are initialized.
The init program (or systemd) is the first user-space process started by the kernel, meaning the kernel must already be loaded before init can begin.
The kernel is loaded into memory by the bootloader; it is not executed directly by the BIOS.
Concept tested: Linux boot sequence (BIOS/UEFI to bootloader)
Source: https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/uefi-firmware-boot-process?view=windows-11
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