Say I have a star topology that has six computers connected around a central hub. If computer 2 wanted to communicate with computer 5, could computer 2 send the message to the HUB and then the HUB send the message to computer 5? Would any other computers get to see the message? Also in a ring topology with 6 computers would would computer 2 communicate with computer 5? Is the message passed to each computer and then forwarded on until it reaches number 5?