Suppose the length of each packet is L bits. Also, assume the path from a server to a client includes N links each of rate R (i. e., there are N-1 routers between the server and the client).a. With store-and-forward packet switching, what is the end-to-end delay to transmit one packet over the N links (ignoring propagation, processing, and queueing delays)?b. What is the delay if the server sends P such packets back-to-back over the N links?