The main advantage of multicast mechanisms versus other possibilities is real time transmission for multiple clients. By using multicast mechanism in these cases, you save an enormous amount of network resources and additionally improve the multicast content transmission.

What is one of the benefits of multicasting over broadcasts?

Unlike broadcasting in which all computers receive messages irrespective of whether they require them, in multicasting, computers can choose to receive a message. Multicasting does not affect all computers on the network. Therefore, multicasting prevents unwanted message transmission and avoids clogging of the network.

What is the purpose of multicast address?

A multicast address is a logical identifier for a group of hosts in a computer network that are available to process datagrams or frames intended to be multicast for a designated network service.