The bus topology is a LAN where computers are interlinked with an unique straight line. But if the cable does not work any more, the LAN it is paralyzed. And do no longer exists. The hosts share a mutual cable, But it also allows the transfer of data, the flow is reduced. And if two computers communicate at the same time the communication will be interrupted.
The star topology, is a LAN where computers are interlinked with a hub or a switch. It is more efficient than a bus topology, because it is less sensitive and doesn’t paralyze the network. But it is more expensive.
Chloé