What is the primary function of a network switch?

What is the primary function of a network switch?

• A. Directs data between networks
• B. Measures bandwidth
• C. Converts analog to digital
• D. Connects network segments

Answer: (D)

A network switch’s main job is to connect devices within a local area network and move data only to the right destination port. It does this by learning where each device is located on the network—building a MAC address table from the source addresses it sees—and then forwarding frames out the port that leads to the destination device. This creates a single, cohesive network from multiple connected devices and keeps traffic targeted, rather than broadcasting to every device. This is different from routing, which directs traffic between separate networks; a switch stays within the local network. It also isn’t about measuring bandwidth or converting analog to digital, which are functions of other devices or tools in a network.

A network switch’s main job is to connect devices within a local area network and move data only to the right destination port. It does this by learning where each device is located on the network—building a MAC address table from the source addresses it sees—and then forwarding frames out the port that leads to the destination device. This creates a single, cohesive network from multiple connected devices and keeps traffic targeted, rather than broadcasting to every device.

This is different from routing, which directs traffic between separate networks; a switch stays within the local network. It also isn’t about measuring bandwidth or converting analog to digital, which are functions of other devices or tools in a network.