98-365 · Question #121
Which task is executed during the Power-On Self Test (POST)?
The correct answer is A. The amount of system RAM is detected.. During the Power-On Self Test (POST), the computer's firmware performs initial hardware checks before loading the operating system.
Question
Which task is executed during the Power-On Self Test (POST)?
Options
- AThe amount of system RAM is detected.
- BThe Master Boot Record is created.
- CThe operating system is initialized.
- DDisk file systems are detected.
How the community answered
(41 responses)- A90% (37)
- B2% (1)
- C2% (1)
- D5% (2)
Why each option
During the Power-On Self Test (POST), the computer's firmware performs initial hardware checks before loading the operating system.
The POST process, executed by the BIOS or UEFI firmware, checks essential hardware components like the CPU, memory (RAM), and video card to ensure they are functioning correctly. Detecting the amount of system RAM is a fundamental part of this initial hardware verification.
The Master Boot Record (MBR) is typically created when an operating system is installed and partitions are formatted, not during POST.
Operating system initialization occurs after POST successfully completes and the boot loader starts loading the OS.
Detecting disk file systems is part of the operating system's boot process, occurring much later than POST.
Concept tested: Computer Boot Process - POST
Source: https://learn.microsoft.com/en-us/windows/win32/wmisdk/about-the-bios
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