After which step of the switch bootup sequence is the boot loader executed?

Question:
After which step of the switch bootup sequence is the boot loader executed?

• after CPU initialization
• after IOS localization
• after flash file system initialization
• after POST execution

Explanation: The correct bootup sequence order is as follows:
1.- The switch loads and executes the POST.
2.- The switch loads the boot loader software.
3.- The boot loader performs low-level CPU initialization.
4.- The boot loader initializes the flash memory.
5.- The boot loader locates and loads the default IOS image.

Exam with this question: CCNA 2 v7 Modules 1 – 4 Exam Answers