$[20$ Points$]$ For the network given above, give global distance vector tables $($using the format given in the textbook$)$ for each of the following:

a$.$ Each node knows only the distance to its immediate neighbors.

b$.$ Each node has reported the information it had in its preceding step to its immediate neighbors.

c$.$ Repeat step $($b$)$ until the table coverages.

d$.$ Repeat $($a$)-($c$)$ above after a break in the link R$2-$R$3$