What is the difference between a bus, ring and star topology?
Star: All stations are connected by cable (or wireless) to a central point, such as hub or a switch. If the central node is operating in a broadcast fashion such as a Hub, transmission of a frame from one station to the node is retransmitted on all of the outgoing links. In this case, although the arrangement is physically a star, it is logically a bus. In the case of the central node acting as switch, an incoming frame is processed in the node and then retransmitted on an outgoing link to the destination station. Ethernet protocols (IEEE 802.3) are often used in the Star topology LAN. Ring: All nodes on the LAN are connected in a loop and their Network Interface Cards (NIC) are working as repeaters. There is no starting or ending point. Each node will repeat any signal that is on the network regardless its destination. The destination station recognizes its address and copies the frame into a local buffer as it goes by. The frame continues to circulate until it returns to the source s
