S249/S249P/22. Refer to figure 4- Performance on a Star-LAN. The diagrams (Left and Right) in figure 4 illustrate the overall performance on each of the LANS discussed in (î) above. Explain the diagrams. In your answer identify which diagram relates to which type of hub device. (iii) (5 marks) 10 10 Time (secs) Time (secs) Figure 4 Performance on a Star-LAN.