OCR GCSE Computer Science Paper 2 2025 – 400 Free Practice Questions to Pass the Exam

The term BIOS stands for Basic Input Output System. It is a crucial component of a computer’s firmware that initializes and tests the hardware components during the boot-up process, before handing control over to the operating system. The BIOS is responsible for performing a POST (Power-On Self-Test) to ensure that all necessary hardware is functioning correctly and is ready to operate. Additionally, it provides an interface through which the operating system can communicate with the hardware peripherals such as keyboards, disk drives, and video displays. This foundational role is essential for the overall operation of a computer system, making it a key element in the booting process.

The other options provided, while they may contain similar terms, do not accurately represent what BIOS stands for or its function. They misinterpret the core components that BIOS is intended to handle, which include basic input and output operations for the critical hardware interactions at the start of a computer’s operation.