Why Ethernet chooses CSMA$/$CD as its protocol instead of others? List its advantages and compare it with slotted ALOHA, pure ALOHA and CSMA? Assume the ethernet LAN is configured with CSMA$/$CD using bus topology. If the stations are using frames of size $500$ bits and the datarate offered by a cable is $50$mbps $($megabits per second$).$ The signal speed inside the cable is $2,50,000$ km$/$sec$.$ The stations are connected uniformly with a spacing of $10$ mts between the adjacentones. What will be the maximum number stations that can be connected?