Which of the following software is the first one to work when you switch on your laptop?

Question:  Which of the following software is the first one to work when you switch on your laptop?

A   Operating System (OS)

B   Web Browser

C    Microsoft Office

D   Video Editing Software

Answer:   Operating System (OS)

Software Component                       Description
Operating System (OS) ·        The first software to load when you turn on your laptop.

·        The core software that manages the computer’s hardware and software resources.

·         Provides a user-friendly interface and supports various applications and functions.

·        Coordinates tasks, memory management and device drivers.

·        Examples include Windows, macOS, Linux and more.

BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) ·        Firmware program stored in a chip on the motherboard. – Initializes hardware components, including the CPU, RAM, and storage devices.

·        Performs Power-On Self-Test (POST) to check for hardware issues. – Determines the boot order (the sequence in which devices are checked for an operating system).

Bootloader ·        A small software program that loads the operating system into memory from the storage device (e.g., hard drive or SSD).

·        Manages the startup process, including loading essential system files and drivers.  Often provides a menu for selecting different OS options if multiple operating systems are installed (e.g., dual boot).

Kernel ·        The central component of the operating system.

·        Manages hardware resources, such as CPU, memory, and I/O devices.

·        Responsible for system initialization, process management, and system calls.

·        Directly interacts with hardware and ensures smooth operation.

Login Screen ·        A graphical user interface (GUI) component that appears after the OS has loaded. Prompts the user to log in by entering a username and password (or other authentication methods).

·        Acts as a security measure to protect user data and system access.