. . . "s better.Dis: Expensive, complicated5.What is the difference between a Hub and a Switch?Hub is device to connect two devices, switch is a network bridge which processes and routes data approirately over network layer of OSI Reference model6.On which OSI layer can a router be found?physical layer7.What is CSMA/CD?Carrier sense multiple access with collision detection8.What is multicast?to send data" .