please resolve both questions, thank you

Question1: Marks (5) Write down the steps taken by the distance vector routing algorithm when link (x-y) cost changes from 4 to 1 in figure 4.31 a. Question 2: Marks (5) Write down the steps taken by the distance vector routing algorithm when link (x-Y) cost changes from 4 to 60 in figure 4.31 b. 60 50 50 b. Figure 4.31. Changes in link cost