What type of communication is typically used for high-speed data transmission?

High-speed data transmission is predominantly achieved through broadband methods. Broadband refers to a wide bandwidth transmission technique that can carry multiple signals and traffic types simultaneously, making it ideal for the handling of large amounts of data at faster speeds. This capability is crucial for applications such as video streaming, online gaming, and large file transfers, where high data rates and high capacity are necessary.

In contrast, narrowband methods limit bandwidth and are often suited for lower-speed applications such as voice communication or basic data services. They do not support the capacity and speed required for modern high-speed internet applications.

While Wi-Fi protocols can facilitate high-speed communication, they are a specific implementation of broadband technology. Therefore, they don't represent the full spectrum of broadband methods used for high-speed data transmission. The focus on broadband as the primary means of achieving these speeds highlights the reliance of modern networks on this type of communication to meet user demands for speed and capacity.