In which topology is there a central connectivity device that all computers connect to?

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

Answer: (A)

A star topology is defined by a central connectivity device that all computers connect to. In this setup, every workstation runs a cable to a central hub or switch, which relays all communications through that single point. This central device makes the network easy to manage and scale, since adding another computer simply requires another connection to the hub or switch. If the central device fails, the whole network is affected, which is a trade-off to consider.

The other topologies don’t center around a single hub. A ring connects devices in a closed loop with data circulating around the circle, so there isn’t a central point. A mesh involves multiple interconnections between devices for redundancy, again without a single central hub. A bus uses one shared cable that all devices tap into, with no central device coordinating traffic.