Which technology is primarily used for connecting to a local area network?

The technology primarily used for connecting to a local area network (LAN) is Ethernet. Ethernet is a networking standard that defines how devices communicate over a wired network. It operates by using cables (e.g., twisted-pair cables or fiber optics) and is widely utilized in both residential and commercial environments for its reliability and speed. Ethernet provides a stable connection that supports high data transfer rates, making it ideal for local area network setups where devices are in close proximity to each other.

Wi-Fi, while also a method for connecting to a LAN, uses wireless communication, which can introduce latency and potential interference. Bluetooth is designed primarily for short-range communication between devices, such as connecting peripherals like keyboards or mice, rather than for broader network connectivity. DSL, or Digital Subscriber Line, is a technology used for high-speed internet access over telephone lines, not specifically for connecting devices within a local area network.