What is the third step to the boot process?

• A. Processor begins running the bootstrap program
• B. Loads operating system files to RAM and kernel
• C. Bootstrap program executes a series of tests to check the components and their settings
• D. User sign in

Answer: (C)

The main idea is what happens during the early boot sequence before the operating system starts. When power is applied, the firmware (BIOS/UEFI) takes control and runs a set of checks on the hardware to make sure everything is functioning correctly. This is the bootstrap program going through a series of tests to verify components and their settings. Those checks ensure the system is sane before loading the OS. Only after these checks pass does the system move on to loading the operating system into RAM and starting the kernel. Sign-in happens after the OS is loaded, so it comes later in the process.