The advantage is that it gathers more information, and can make more informed decisions as to what to do with the packet. The basic layout of the UB computer network is as follows. These routers then have dedicated interfaces for each building. There is a simple diagram of the backbone below. As I mentioned earlier, the major difference between these devices is the layer at which they operate.
Hubs operate at the physical layer.
They simply copy data from every port to every other port. They are often referred to as repeaters. They generally do not look at the data at all, they simply repeat it to all of the other ports. Below is a picture of a rack of hubs at the University. The second picture shows the wiring that is used to connect the hub ports to the various offices.