Which device typically does NOT segment a network?

A hub is a basic networking device that operates at the physical layer of the OSI model. It transmits data packets to all devices on a network segment without filtering or managing traffic. This means that a hub does not segment a network; instead, it creates a single collision domain, allowing all connected devices to send and receive data in a shared environment.

In contrast, devices like routers, switches, and bridges operate on higher layers of the OSI model and are designed to manage and segment network traffic effectively. Routers separate traffic between different networks, switches create separate collision domains for connected devices, and bridges connect different network segments while also managing traffic between them. Thus, the hub does not perform any form of network segmentation and allows for potential data collisions within its shared communication environment.