Telecommunications networks are systems that allow the transmission of information over distances. They connect various devices, such as phones, computers, and servers, enabling communication through voice, data, and video. These networks can be wired, using cables, or wireless, using radio waves, and they form the backbone of modern communication. These networks consist of several components, including routers, switches, and transmission media. They work together to ensure that messages are sent and received accurately and efficiently. Telecommunications networks are essential for services like internet access, mobile communication, and broadcasting, playing a crucial role in everyday life.