in ethernet nerwork whose nodes are connected in fue duplex - Mode to the porn of a switch, using U Tp Cables a) The CSMA/CD access protocol is still used for bit rates smaller than 100 MB/S The CSMA/CD acesss protocol in indeed useless because the switch operates at bit rater larger or equal to 1 GRps, making the juance very The CCMA/CD as protocol as still used, but only when two transmissions start at the same time, a) The CSMA/ Co acests protond its inded uselen benuse the swira bepurates' the wollidson domaine amusy onts ports very short