Hi Chris hope you are feeling better, I am unsure at how to go about answering this question: Consider the delivery of messages in an internetworked environment in which the source and destination nodes are many hops apart. Large messages must be fragmented and reassembled using one of two possible approaches. The first approach involves fragmenting each message at the source node, and then reassembling them at the destination node. The second approach involves fragmenting each message at the source node, reassembling and re-fragmenting them at intermediate nodes, and final reassembly at the destination node. With reference to two distinct examples, describe circumstances where each of the methods would be preferred over the other. Am I correct in saying that in practice we use the first approach where we fragment once at the source and then re-assemble at the destination? (or do in practice do we use both approaches) Would a use case for the first method be that the network doesn't change much and has pretty good reliability such as a LAN for example, and the other could be used for a network which changes frequently and routing of packets and routing tables would change drastically very quickly and in that case re-assembly would be needed to perhaps re-determine routing?