Which statement best defines a collision domain?

Which statement best defines a collision domain?

• A. A network segment where data packets may collide on a shared medium
• B. A network segment that guarantees error-free transmission
• C. A domain for VLAN segmentation
• D. A domain for IP address management

Answer: (A)

Collision domains are the parts of a network where devices share the same physical medium and can cause each other’s transmissions to collide. On a shared Ethernet network, if two devices transmit at once, a collision occurs and the devices must wait and retry. Switches help by giving each port its own collision domain, so collisions don’t span the whole network, while hubs keep all connected devices in one collision domain. That makes the statement describing a network segment where data packets may collide on a shared medium the best definition. The other options don’t fit: error-free transmission isn’t guaranteed in a collision-prone segment; VLAN segmentation relates to separating broadcast domains, not specifically collision domains; IP address management is about addressing, not how the network handles simultaneous transmissions.

Collision domains are the parts of a network where devices share the same physical medium and can cause each other’s transmissions to collide. On a shared Ethernet network, if two devices transmit at once, a collision occurs and the devices must wait and retry. Switches help by giving each port its own collision domain, so collisions don’t span the whole network, while hubs keep all connected devices in one collision domain.

That makes the statement describing a network segment where data packets may collide on a shared medium the best definition. The other options don’t fit: error-free transmission isn’t guaranteed in a collision-prone segment; VLAN segmentation relates to separating broadcast domains, not specifically collision domains; IP address management is about addressing, not how the network handles simultaneous transmissions.