What functionality do switches provide in a Local Area Network (LAN)?

Switches play a key role in the functionality of a Local Area Network (LAN) by managing the flow of data between devices more efficiently. They achieve this by using MAC (Media Access Control) addresses to identify each device on the network. When a switch receives a data packet, it checks the destination MAC address and directs the packet only to the intended device rather than broadcasting it to all devices on the network. This targeted communication significantly reduces unnecessary traffic, improving overall network performance and efficiency.

The other options refer to different networking functions. For instance, connecting networks typically describes the role of routers, which facilitate communication between different networks. Routing messages to all devices relates more to a basic hub function than a switch’s operation; switches do not work this way. Lastly, providing wireless access is the primary function of access points or wireless routers, not switches. Thus, the correct answer highlights the essential role of switches in managing network traffic effectively, ensuring smoother and faster data transmissions within a LAN.