CompTIA A+ 220-901

Answer: A - Use a switch to avoid network degradation in the network. This switching operation reduces the amount of unnecessary traffic that would have occurred if the same information had been sent from every port, as with a hub.

Key Takeaway: Switches control the flow of network traffic based on the address information in each packet. A switch learns which devices are connected to its ports by monitoring the packets it receives and then forwards packets to the appropriate port only. This allows simultaneous communication across the switch, improving bandwidth. Switches and hubs are often used in the same network. The hubs extend the network by providing more ports, and the switches divide the network into smaller, less congested sections.