Windows Server Administration Fundamentals — Question 138

You turn on a computer.
What happens first?

Answer options

• A. The operating system is loaded.
• B. The boot sector is accessed.
• C. The BIOS is loaded.
• D. The Master Boot Record (MBR) is accessed.

Correct answer: C

Explanation

The first action taken when a computer is powered on is loading the BIOS, which initializes hardware components and prepares the system for booting. While the operating system, boot sector, and MBR are important in the boot process, they are accessed after the BIOS has completed its tasks.