What is contention domain?

A contention domain is a network segment where multiple devices compete for the same communication medium, leading to potential data collisions. In such environments, only one device can transmit data at a time, requiring mechanisms like carrier sense multiple access (CSMA) to manage access. Contention domains are common in shared network environments, such as Ethernet networks, where devices must wait for their turn to send data. Reducing the size of contention domains can improve overall network performance by decreasing collision rates.