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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.
A type of temporary computer memory that stores data and instructions currently in use, allowing quick access by the processor. RAM is cleared when the device is turned off.
Example: Adding more RAM improved the computer's performance.
A set of protocols for building and interacting with software applications.
Example: The developer used a weather API to add live forecasts to the app.
An email authentication protocol that allows domain owners to specify which mail servers are authorised to send emails on behalf of their domain. It helps prevent email spoofing and phishing.
Example: A company sets up an SPF record in its DNS to specify that only its official mail servers can send emails using its domain.
Extended ATX (E-ATX) is a larger motherboard form factor measuring up to 305mm x 330mm, used in high-end workstations and servers for additional features and expansion.
Example: He wanted an E-ATX motherboard for his computer for extra RAM and PCIe slots.
See also: Motherboard, ATX
The physical components of a computer system, including internal parts and external devices.
Example: Upgrading the hardware by adding more RAM improved the performance of the laptop.
Typically referring to RAM (Random Access Memory), it is a computer component that stores data temporarily while the system is running.
Example: The computer has 32GB of memory, allowing it to run multiple applications simultaneously without slowing down.
This is a diagnostic testing sequence run by a computer's BIOS when the machine is powered on to check hardware components such as RAM, CPU, and storage devices.
Example: When a user turns on their PC and hears a single beep, it indicates the POST has completed successfully.