JN0-102 · Question #285
Which statement is true regarding an Ethernet collision domain?
The correct answer is C. If a switch is used, the collision domain is limited to each device and the switch. A switch effectively segments a network, creating a separate collision domain for each connected device, while devices like hubs or bridges might operate differently.
Question
Which statement is true regarding an Ethernet collision domain?
Options
- AIf a router is used, the collision domain includes all devices connected to the router.
- BIf a hub is used, the collision domain is limited to each device and the hub.
- CIf a switch is used, the collision domain is limited to each device and the switch.
- DIf a bridge is used, the collision domain includes all devices connected to the bridge.
How the community answered
(21 responses)- A5% (1)
- B5% (1)
- C90% (19)
Why each option
A switch effectively segments a network, creating a separate collision domain for each connected device, while devices like hubs or bridges might operate differently.
A router separates broadcast domains and also collision domains at each of its interfaces, rather than including all connected devices in a single collision domain.
A hub connects all devices to a single shared medium, placing all of them within one large collision domain, not limiting it to each device and the hub.
A switch operates at Layer 2 and creates individual collision domains for each of its ports, meaning that the collision domain is limited to the direct connection between a device and its respective switch port.
A bridge, like a switch, segments collision domains by forwarding frames based on MAC addresses, thereby creating separate collision domains on each of its ports rather than combining them.
Concept tested: Ethernet collision domains and network devices
Source: https://www.cisco.com/c/en/us/support/docs/lan-switching/ethernet/10570-41.html
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