Which topology features a central connectivity device to which all nodes connect?

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

Answer: (A)

The main concept here is how devices connect to each other in a network, specifically the presence of a centralized point that coordinates traffic. In a star topology, every node links directly to a central device such as a switch or hub. All communication between nodes goes through this central device, making it easy to manage, monitor, and troubleshoot. If the central device fails, the entire network segment loses connectivity, illustrating both the centralized control and the single point of failure.

This differs from a ring, where each device connects to two neighbors and data travels around the ring without a central hub. A mesh uses many interconnections between devices to provide multiple paths, not a single central point. A bus relies on a single shared communication line with no central hub to coordinate traffic.

Therefore, the feature described—a central connectivity device to which all nodes connect—fits the star topology.