Which of the following devices helps to reduce network traffic by dividing networks into segments?

The choice of bridge as the correct answer is aligned with its function in networking. A bridge operates at the data link layer of the OSI model and is specifically designed to connect and filter traffic between two or more network segments. By doing so, it helps reduce network traffic by ensuring that only the data meant for a segment is sent to that segment, rather than flooding the entire network with unnecessary traffic.

This segmentation is essential for improving overall network efficiency and performance because it minimizes collisions and the excess load on any single network segment. A bridge analyzes incoming data frames and decides whether to forward them to another segment or discard them if they are not relevant, enhancing the flow of data across the network.

Comparatively, devices such as routers and switches also manage network traffic but serve broader or different purposes. Routers operate at a higher layer (layer 3) dealing with IP addresses for directing data between different networks, while switches function at a lower level like bridges but allow for connection within a single network, efficiently managing traffic among multiple devices. Hubs, on the other hand, simply broadcast incoming data to all connected devices without any filtering or logical segmentation, which can lead to increased network congestion.