When you create a network strategy you have to consider the kind of topology you are going to use this is how the computers are connected.
bus topology this is when computers are connected to a single cable known as the bus. Data packets are sent out along the bus with the address of the receive.
Star topology this is when all nodes on the network connect to a central node then messages are passed to the central node, and then onto the recipient.
Mesh topology this is when each node must be connected to at least 2 other nodes and If one link is broken, packets can still reach their destination via a different link.