A system program that handles the early initialization of peripheral buses (like PCI or USB) immediately after the main processor finishes POST is the: MCQ with Answer and Explanation

A system program that handles the early initialization of peripheral buses (like PCI or USB) immediately after the main processor finishes POST is the:
A. Disk Partition Controller
B. Device Driver Loader
C. BIOS / UEFI Motherboard Firmware
D. Application Run Subsystem
Answer: Option C
Solution (By JKSSB Mock Tests)
BIOS/UEFI firmware initializes structural hardware buses and interfaces to prepare the system before loading the main OS.

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