Can anyone help me with this is related to Computer Networks: TCP. Please.

Consider the TCP trace in Figure 6.28. Identify time intervals representing slow start on startup, slow start after timeout, and linear-increase congestion avoidance. Explain what is going on from T = 0.5 to T = 19. The TCP version that generated this trace includes a feature absent from the TCP that generated Figure 6.11. What is this feature? This trace and the one in Figure 6.13 both lack a feature. What is it? 70 20 1.0 2.0 3.0 4.0 7.0 70 60 0 20 3.0 50 60 7.0 8.0 9.0 Time (seconds) 70 60 30 20 10 2.0 4.0 6.0 7.0 3.0 Time (seconds) 5.0 FIGURE 6.13 Trace of TICP with fast tetransmit Colored line- CongestionWindow, solid bullet-timeout ash marks- time when each packet is transmited, vertical bars- ime When apacket that Was evantualy retransmittid Was first transmitted