A) assume there is a wide area network with n nodes, where n > = 2. what is the smallest number of point-to-point communication links such that every node in the network is able to talk to every other node? (note: a network in which some nodes are unable to exchange messages with other nodes because there is no path between them is called disconnected.) b)if you are worried about having a disconnected network, what type of interconnection structure should you use when configuring your network?