XK0-005 · Question #63
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 during a system boot cycle, it executes the bootloader program.
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
How the community answered
(64 responses)- A89% (57)
- B3% (2)
- C2% (1)
- D6% (4)
Why each option
After the BIOS completes its initial hardware checks and initialization during a system boot cycle, it executes the bootloader program.
The BIOS's primary function after POST (Power-On Self-Test) is to locate and load the bootloader (e.g., GRUB, LILO) from a configured boot device, which then takes over the process of loading the operating system kernel.
The `inetd` program is a super-server daemon that starts much later in the boot process, after the operating system has initialized.
The `init` program (or `systemd`) is the first user-space process started by the kernel, which itself is loaded by the bootloader.
The kernel is loaded into memory and executed by the bootloader, not directly by the BIOS.
Concept tested: Linux boot process stages
Source: https://www.ibm.com/docs/en/linux-on-systems?topic=concepts-boot-process-linux
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