Consider the figure below for the following questions (#1 - 3). Each link has a full capacity of 4Mbps. Assume that Host A wants to transport a message of size 20*10^6 bits to Host B. For all the questions below, you can ignore propagation, nodal processing and any queuing delays. What if packet switching is used and the original is broken down into a total of 2000 packets. You can neglect any packet headers, so that the assumption is that the packets are composed would it take for Host A to deliver the file to Host B? Now assume that message switching is used. in other words, the entire message is transmitted at once, but we still implement store and forward at each node along the path. How long would it take for Host A to deliver the file to Host B