Communication channel is shared by all the machines on the network in

In a network where the communication channel is shared by all the machines, it is typically referred to as a broadcast network. In this context, any transmission sent by one machine is capable of being received by all other devices on the network. Ethernet networks in their early forms are classic examples of such environments, utilizing a shared medium (such as a coaxial cable) to facilitate communication. This approach necessitates mechanisms to control access to the shared medium to avoid data collisions and ensure that only one machine transmits at a time. Techniques like Carrier Sense Multiple Access with Collision Detection (CSMA/CD) were developed for this purpose in traditional Ethernet networks.