3. Window size cross country and utilization: Consider the cross-country example shown in Figure below How big would the window size have to be for the channel utilization to be greater than 98 percent? Suppose that the size of a packet is 1,500 bytes, including both header fields and data. Furthermore suppose that the transmission rate of the link, R, is 1Gbps and that the round-trip time, RTT, is 30 milliseconds