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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 copy of data stored separately to restore original information in case of loss.
Example: She made weekly backups of her laptop to an external drive.
See also: Off-site Backup
A copy of data that is stored at a different physical location from the original, used to protect against data loss due to disasters, theft, or hardware failure.
Example: The company regularly performs off-site backups to cloud storage to ensure data safety.
See also: Backup
A facility used to house computer systems, storage, and networking equipment, providing centralised infrastructure for storing, managing, and processing data. Data centres are critical to cloud services and internet operations.
Example: The bank's data centre is located in a high-security building with backup power and climate control.
The movement or transmission of digital information between devices, networks, or storage systems. Data transfer speed, often measured in megabits per second (Mbps) affects how quickly files can be uploaded or downloaded.
Example: The cloud backup service offers unlimited data transfer for all subscriptions.
A set of standards for connecting and transferring data between computers and peripheral devices.
Example: An older server uses a SCSI interface to connect to external tape backup devices.
See also: Hardware
A device that provides backup power to electronic equipment in case of a power outage, allowing time for safe shutdown.
Example: The UPS kept the server running during a brief blackout.
See also: Peripheral, Hardware, PSU