The collision domain applies to wireless networks. However, it also affects earlier versions of Ethernet. A collision happens when two separate devices simultaneously send a packet on the commonly shared network segment. The packets collide, and both devices require sending the packets again. That helps you to reduce network efficiency. This Domain contains all devices which can reach each other at the data link layer with the help of broadcast. Every port on a switch or in a hub should be in the same broadcast domain.
Example of Collision domains
Above given image is an example of a collision domain. In the above example, you can see “Computer A” send a data signal to “Computer C.” In the same way, “Computer B” sends a data signal to “Computer D” where a Collision will happen. When the number of devices in a collision domain rises, and the chances of Collision will be increased. If there is more traffic in a collision domain, there are high chances of crashes to occur. More collisions will happen with many network devices in a Collision domain. An increased number of collisions will result in a low-quality network because hosts spend a large amount of time for packet processing and retransmission. In other words, Collision never happens between two devices, which are connected to different ports of a Switch.
Example of Broadcast domains
In the above-given image, you can see “Computer A” is sending a broadcast, and the switch will forward it to all the ports. Every connected switch will get a copy of the broadcast packet. Here, all the switches will flood the broadcast packet to all types of ports. In this domain type, the router also gets a copy of the broadcast packet. However, the route will not forward the packet to the next network segment. When the number of broadcasts Domain increases, the number of broadcasts also increases, and the network quality comes down.
Difference Between Collision and Broadcast Domain
Here are some important differences between Collision and Broadcast Domain:
