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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 network of interconnected computers and devices within a limited geographical area such as a home, office, or building. LANs enable resource sharing, such as files, printers, and internet access, among connected devices.
Example: The office LAN was upgraded for faster file sharing.
The first web page a visitor arrives at after clicking a link from an ad, email, or search engine result, often focused on a single objective or message.
Example: The company created a landing page to promote its EOFY sale.
The standard markup language used to create and structure content on web pages, including text, images, and links. It forms the foundation of most websites and is interpreted by web browsers.
Example: The developer edited the HTML to fix a formatting issue.
See also: CSS
A structured set of instructions and procedures designed to help an organisation detect, respond to, and recover from cyber security incidents.
Example: When a data breach occurs, the IT team follows the incident response plan, which outlines steps like isolating affected systems, notifying stakeholders, and restoring data from backups.
See also: Incident Response
A programming language used to manage and manipulate relational databases.
Example: An analyst writes an SQL query to retrieve customer data from a company's database.
See also: MySQL
A Virtual Local Area Network (VLAN) is a logical grouping of devices on the same physical network that are segmented into separate broadcast domains for improved management and security.
Example: The IT team created separate VLANs for staff and student devices within the school network to enhance security and control.
A standard wired networking technology commonly used in homes and offices to connect devices within a Local Area Network (LAN).
Example: The desktop was connected to the internet via an Ethernet cable.