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. Anyone on the network can access files stored on any other computer. This type of network is simple and inexpensive, but only can be used with fewer than ten computers.