It actually depends on the hub. I'm going to use this question to break down and shed light on a few terms going well beyond the scope of the question.
Ethernet is the most common local area network technology.
Ethernet was originally developed by Xerox and then developed further by Xerox, DEC, and Intel. An Ethernet LAN typically uses coaxial cable or special grades of twisted pair wires. LAN means Local Area Network, and is used to describe computers connected to one another in a closed system, typically in one room or building. This is opposed to WAN which is typically a group of LANs connected to each other in a more complex system or across a wide geographical area. A WAN may use the Internet to connect the LANs but the WAN is not accessible outside of the network.