NCTI Field Tech III to IV Practice Exam

Devices connected to hubs share the same collision domain. When multiple devices are connected to a hub, they all communicate in a way that any data sent by one device can potentially collide with data sent by another device. This is because a hub operates at the physical layer of the OSI model and does not filter or direct traffic. Consequently, if two devices transmit data simultaneously, a collision occurs, causing both transmissions to fail and necessitating a retransmission.

Since the hub does not perform any intelligent routing or separation of traffic, all devices within that hub are affected by these collisions, meaning they are part of the same collision domain. In contrast, other options such as broadcast domain refer to a layer that would typically involve switches or routers managing traffic more effectively, which is not applicable to a basic hub environment. Thus, the correct answer pertains to the nature of how traffic behaves in a hub-based network setup.