1. consider a client and a server connected through one router. assume the router can start transmitting an incoming packet after receiving its first h bytes instead of the whole packet. suppose that the link rates are r byte/s and that the client transmits one packet with a size of l bytes to the server. what is the end-to-end delay? assume the propagation, processing, and queuing delays are negligible. generalize the previous result to a scenario where the client and the server are interconnected by n routers.

As the total bytes are L, when h bytes out of L are sent from client to router the router immediately send these h bytes forward to next router. Thus simultaneously another set of h bytes reaches the router and therefore many actions are being performed in a simultaneous way.  

Explanation:

For finding end to end delay, calculations are done and briefed.

All the paper work along with explanation is attached for better understanding.

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