Question $4(2$ points$)$

In Part $2,$ Step $7,$ you changed the command in Ubuntu Linux to etho to all$-$multicast mode. What is multicast? $($you may have to look this up online$)$

a$)$ a group communication where data transmission is addressed to all destination computers on the network simultaneously

b$)$ a group communication where data transmission is addressed to a specific group of destination computers simultaneously

c$)$ none of these

d$)$ a transmission where data transmission is sent to a single destination computer on the network