Consider the network from the previous problem running distance—vector routing has already achieved convergence

Consider the network from the previous problem running distance—vector routing has already achieved convergence. At some time link B-C fails. (a) Each node knows only the distances to its immediate neighbors. (b) Each node has reported the information it had in the preceding step to its immediate neighbors. (c) Step (b) happens a second time a) Give the routing tables at A and D after B and C have reported the news. b) Give the routing tables at A and D after their next mutual exchange.