A source in Vancouver has established a TCP connection to a destination in Tokyo over a transatlantic T3 optical fiber l

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A source in Vancouver has established a TCP connection to adestination in Tokyo over a transatlantic T3 optical fiber line(~45 Mbps) with an RTT of 50 msec. The destination has indicated awindow size equal to the maximum allowed by the window size fieldin TCP.
a) Ignoring TCP’s slow start phenomenon and assuming no packetloss, what is the percentage of time that the source spends waitingfor the destination’s acknowledgement? Assume zero processing delayat the destination.
b) What is the effective bitrate of this connection?
c) What is the efficiency of this connection?
d) What would be the efficiency of this connection if it wasover 56Kbps modem (old Internet), as opposed to T3? RTT is still 50msec.
e) To alleviate the efficiency problem, RFC 7323 suggestsextending TCP’s window size field by an additional 14 bits,borrowed from TCP’s options field. What would be the efficiency ofthe T3 connection under RFC 7323?