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Glossary of terms and definitions for IT (Information Technology), the Internet and cyber security.
This glossary provides more than 480 clear and concise definitions of commonly used terms in the fields of information technology, the internet, and cyber security. It is designed to support users of all levels in understanding key concepts, technical jargon, and acronyms frequently encountered across digital platforms and security-related discussions. Whether you are a business owner, student, professional, or simply interested in the digital landscape, this resource aims to enhance your knowledge and confidence in navigating the ever-evolving world of technology.
Boot refers to the process of starting a computer and loading the operating system into memory from the hardware's initial power-on state.
Example: After turning on the computer, the BIOS performs a POST and then boots into the installed operating system from the SSD.
See also: POST (Power-On Self-Test)
Dual Boot refers to the setup of a computer system to run two different operating systems on separate partitions, allowing the user to choose one at startup.
Example: A developer sets up a dual boot system with Windows 11 and Ubuntu for software testing.
To restart a computer system.
Example: She had to reboot her laptop after a software update.
A security feature that ensures a device only boots using software trusted by the manufacturer.
Example: If malware tries to alter your computer's boot process, Secure Boot prevents the system from starting.
Complementary Metal-Oxide-Semiconductor (CMOS) is a technology used to store BIOS settings and system configuration data in a computer, typically powered by a small battery on the motherboard.
Example: After replacing the CMOS battery, the technician reconfigured the system time and boot order in the BIOS.
See also: BIOS
A storage device that uses flash memory to store data, offering faster access speeds and greater durability compared to traditional hard drives.
Example: Installing an SSD significantly reduced the computer's boot time.
A modern firmware that initializes hardware during the boot process and provides an interface between the operating system and platform firmware, replacing the legacy BIOS.
Example: A new laptop uses UEFI to support faster boot times and larger hard drives compared to older BIOS systems.