How many hubs do we have?

• A. 8
• B. 10
• C. 9
• D. 12

Answer: (B)

In networks, a hub is a central connection point that ties several devices together and repeats signals to all ports, operating at the physical layer. So when you’re asked how many hubs we have, the task is to count every device in the diagram that serves as that central multi‑port junction.

To do this correctly, identify each hub icon or label that connects multiple endpoints and distinguish it from switches, routers, or end devices, which don’t function as simple broadcast hubs. By tallying all such central connection points in the diagram, you arrive at the total number of hubs present. The correct option is the one that matches that exact total shown in the diagram. This approach ensures you’re counting only the hub devices, not other types of equipment or miscounts.