$\square$ B. In a star topology, all computers are connected through one central hub or switch. A star topology actually comes from the days of the mainframe system. The mainframe system had a centralized point at which the terminals connected.
ख A is incorrect because a bus topology uses one cable to connect multiple computers. C is incorrect because the mesh network has every PC connected to every other PC and can resemble a spider's web. $\mathbf{D}$ is incorrect because a ring topology resembles a circle or ring. $\mathbf{E}$ is incorrect because there is no physical cabling to represent the topology; it is represented by a bubble or cell.