In which scenario would you use multicast transmission?

Multicast transmission is specifically designed for sending single packets of data to a specific group of recipients rather than all users or individual users. It allows the sender to efficiently transmit data to multiple receivers who are members of a particular group, thereby conserving bandwidth and reducing the overall network load.

By using multicast, packets are sent only once on the network, and those that are interested in receiving the data can join the multicast group. This approach is particularly beneficial for scenarios such as streaming audio or video to a selected audience, where not everyone on the network needs to receive that data.

In contrast, sending additional copies of data to individual users would require separate transmissions for each user, which is less efficient. Broadcasting data to all network nodes would flood the entire network regardless of whether individual devices need the information, which is not the purpose of multicast. Ensuring that all packets arrive at their destination does not specifically pertain to multicast; rather, it is more related to unicast or using error correction protocols for reliable data transmission.