What is the main function of network switches?

The main function of network switches is to connect devices on a Local Area Network (LAN) and forward data directly using Media Access Control (MAC) addresses. Switches operate at the data link layer of the OSI model and intelligently manage network traffic by directing data packets only to the intended device rather than broadcasting them to all devices on the network. This process enhances the efficiency and speed of the network, as it reduces unnecessary data transmissions and potential collisions.

By using MAC addresses, switches maintain a MAC address table that maps each device's MAC address to the corresponding port on the switch. When a device sends data, the switch can quickly determine where to send it, resulting in a more organized and effective distribution of network resources. This functionality is crucial for creating reliable and high-performance networks that can support multiple devices and applications simultaneously.

All other choices do not accurately represent the primary role of network switches:

• Connecting devices on a Wide Area Network (WAN) refers to routers rather than switches.

• Providing internet access typically involves modems or routers, along with other infrastructure.

• Boosting Wi-Fi signals is related to range extenders or access points, not switches.