A telecommunications network is a system that allows for the transmission of data over distances. It connects various devices, such as phones, computers, and servers, enabling communication through voice, text, and video. These networks can be wired, using cables, or wireless, using radio waves. Telecommunications networks consist of several components, including routers, switches, and transmitters. They can be categorized into different types, such as local area networks (LANs) for small areas and wide area networks (WANs) for larger regions. These networks play a crucial role in modern communication and information exchange.