In a star network, what occurs if the central hub fails?

In a star network topology, all devices (or nodes) are connected to a central hub. The hub acts as a central point of communication; hence, if it fails, the entire network is disrupted. Since each device relies on this central hub for transmitting data to one another, the failure of the hub results in all connected devices losing their ability to communicate with each other. This means that none of the devices can send or receive data, effectively isolating them from one another until the central hub is repaired or replaced. This explains why the correct answer indicates that all devices connected to the hub lose connectivity.

In contrast, if only a single device were to fail or if the topology did not rely solely on a central hub for all communication, the remaining devices might still be able to function or communicate through alternative means.