ITPEC IP October 2022 Question 18
ITPEC IP October 2022 — Question 18 of 100
Startup proceeds in the order BIOS, operating system, then resident application programs. Firmware begins executing when power is applied, initializes and checks hardware, and locates the boot device. It loads the OS, which initializes system services and then starts configured resident applications.
Answer (a)
Why not others:
- the OS cannot run before firmware initializes the machine and loads it
- resident applications depend on OS services and therefore start after the OS
Key rule: The boot chain moves from firmware to operating system to applications; each stage prepares the environment needed by the next.
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