Help

Consider the figure below, with three links, each with the specified transmission rate and link length. A. Find the end-to-end delay (including the transmission delays and propagation delays on each of the three links, but ignoring queuing delays and processing delays) from when the left host begins transmitting the first bit of a packet to the time when the last bit of that packet is received at the server at the right. B. Assuming no other traffic in the network, what is the throughput for the file transfer (end-to-end)? Explain your answer. The speed of light propagation delay on each link is 3 times 10^8 m/sec. Note that the transmission rates (T_R) are in Mbps and the link distances are in Km. Assume a packet length of 16000 bits. Give your answer in milliseconds. (Show your work)