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Glossary / Dictionary

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.



Broadband

A high-speed internet connection that provides fast and continuous access to online services, typically delivered via technologies such as DSL, cable, fibre optic, or satellite. In Australia, broadband is commonly provided through the National Broadband Network (NBN), which aims to deliver improved internet performance across the country.

Example: The government subsidised regional broadband to improve internet access in remote communities through the NBN.

See also: NBN, ADSL, SDSL



NBN (National Broadband Network)

A government-owned initiative in Australia designed to provide high-speed internet access to homes and businesses through a mix of technologies including fibre optic, fixed wireless, and satellite. The NBN aims to improve national connectivity and support digital services across urban and regional areas.

Example: After switching to the NBN, their household experienced faster and more reliable internet for streaming and remote work.

See also: Broadband



ADSL (Asymmetric Digital Subscriber Line)

A type of broadband internet connection that uses existing telephone lines with higher download than upload speeds.

Example: A household in regional NSW uses ADSL for internet access where fibre is not yet available.

See also: Broadband, SDSL, NBN



Fibre Optic

A high-speed transmission technology that transmits data as light through flexible glass or plastic cables. It is widely used in Australia's NBN to deliver faster and more reliable broadband.

Example: They switched to fibre optic internet for faster downloads.

See also: Broadband, NBN



SDSL (Symmetric Digital Subscriber Line)

A broadband internet connection that provides equal upload and download speeds.

Example: A business uses SDSL to support video conferencing and file uploads with consistent performance.

See also: Broadband, ADSL, NBN