Why is a simple fault model needed in networking? What is the single fault that all other faults become in the network?

[9 marks] Your department has less than 200 people and has been assigned a class C network by its enterprise. The class C network address assigned to you is 214.53.67.0. You need to divide this into three subnets for the administration group, accounts, and development group. Assume the first and last subnets are usable. i) [4 marks] List the network addresses for the subnets in dotted-decimal slash notation. ii) [2 marks] What is the broadcast addresses for these subnets? iii) [2 marks] Give the subnet mask. iii) [1 mark] How many hosts are in each subnet?

What is the main difference between a distance-vector algorithm such as RIP, and a link-state algorithm such as OSPF?