An Ethernet Hub separates collision domains

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An Ethernet Hub separates collision domains

The main idea is how collision domains behave with different Ethernet devices. An Ethernet hub acts as a simple repeater: it forwards signals to all ports, so every device connected to that hub shares the same physical segment. Because transmissions from any two devices can collide, that hub creates a single collision domain for all its ports. A switch, by contrast, isolates collisions on a per-port basis, so each connected device has its own collision domain. Therefore, the statement that a hub separates collision domains is not correct. The correct understanding is that hubs do not separate collision domains, while switches do. The network size or using the hub with a switch doesn’t change this fundamental property.

The main idea is how collision domains behave with different Ethernet devices. An Ethernet hub acts as a simple repeater: it forwards signals to all ports, so every device connected to that hub shares the same physical segment. Because transmissions from any two devices can collide, that hub creates a single collision domain for all its ports. A switch, by contrast, isolates collisions on a per-port basis, so each connected device has its own collision domain. Therefore, the statement that a hub separates collision domains is not correct. The correct understanding is that hubs do not separate collision domains, while switches do. The network size or using the hub with a switch doesn’t change this fundamental property.

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