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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 logically segmented portion of a larger network, used to improve performance and manageability by dividing IP address space.
Example: The IT department creates a subnet for the accounting team to isolate their network traffic from other departments.
See also: Network
A Subnet Mask is a 32-bit number used in IP networking to divide an IP address into network and host portions, helping determine which devices are on the same local network.
Example: The technician configured the router with a subnet mask of 255.255.255.0 to define the local network range.