LFCS Question #683: Real Exam Question with Answer & Explanation

Question

During a system boot cycle, what program is executed after the BIOS completes its tasks?

Options

• AThe bootloader
• BThe inetd program
• CThe init program
• DThe kernel

Explanation

After the BIOS completes its initial hardware checks and initialization, it transfers control to the bootloader, which is responsible for loading the operating system.

Common mistakes.

• B. 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.
• C. 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.
• D. 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)

Reference. https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/uefi-firmware-boot-process?view=windows-11

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