Starting CCNA from Topologies

Topology is the physical layout of the computer, other nodes and cabling of the network.
Some General Topologies:
1: BUS TOPOLOGY:
                                    Nodes/computers are connected to a central cable, called a backbone, which runs the length of the network.
2: RING TOPOLOGY:
                                      The primary network cable is installed as a loop, or ring, and the workstations/computers are attached to the primary cable at points of the ring.
3: STAR TOPOLOGY:
                                       Each workstation/computer connects directly to the central server with its own cable.