1. TCP operation (a problem not in the book): (a) Construct an example where an entire window of TCP packets are lost when the window size reaches 2 during the first slow start. Show how TCP responds to the losses at the packet level using the packet timing diagram (see the example given in class). Sketch the sliding window at the sender side. Note the time epochs when TCP changes phases. Basic idea for sol: wait for timeout, then start from slow start again. (b) Then consider another example where the ACK for the second packet is lost. Show how TCP responds by plotting CWND(t) as a function of time. Note the time epochs when TCP changes phases. (c) Consider slow start. Assume no loss event occurs. Consider the time increment to be one ACK. Obtain an iterative equation for the congestion window size. Illustrate your result using an example that CWND(t1RTT)=4