Which topology connects all devices to a single central cable, with devices sharing bandwidth?

• A. Bus
• B. Ring
• C. Star
• D. Mesh

Answer: (A)

In bus topology, all devices connect to one main cable, the backbone, so everyone shares the same communication channel. Because the medium is shared, transmissions can collide if more than one device talks at once, which is why devices use a shared access method (like CSMA/CD in classic Ethernet) to take turns. Terminators at the ends keep signals from reflecting back along the cable.

This fits the description well: a single central cable that all devices tap into, with bandwidth shared among them. It’s different from a star, where each device has its own separate link to a central hub, a ring where data moves around a closed loop, or a mesh where multiple direct paths exist between devices.