What type of network topology uses a central hub where all devices connect?

The correct answer is the topology that utilizes a central hub where all devices connect, which is known as the star topology. In a star topology, each device on the network is connected to a central hub or switch. This configuration allows for easy management of the network and simplifies troubleshooting since any problem with a single device typically does not affect the entire network.

In a star topology, messages are sent from one device to the hub, which then forwards the message to the appropriate device. This design provides advantages such as the ability to add or remove devices without disrupting the network and improved performance due to the dedicated point-to-point connections between the hub and each device.

Additionally, star topologies generally offer better scalability compared to other types, making them a popular choice for both small and large networks.