A network is a group of connected computers that allow people to share information and equipment.
Network traffic is the information that travels through a network.
When there is a lot of network traffic, information travels more slowly through the network. Cables connect computers and equipment to a network. Fiber optic is the most expensive type of cable, but it can carry information faster and over longer distances. A hub provides a central location where all the cables on a network come together. This card controls the flow of information between the network and the computer.