সঠিক উত্তর হচ্ছে: bus
ব্যাখ্যা: A bus topology is a topology for a Local Area Network (LAN) in which all the nodes are connected to a single cable. The cable to which the nodes connect is called a \"backbone\" √ In a bus topology , all nodes in the network are connected directly to a central cable that runs up and down the network, this cable is known as the backbone . Data is sent up and down the backbone until it reaches the correct node.