QUESTION 3 a) Give ONE (1) function of logical addressing in data communication system. (2 marks) b) A block of addresses is granted to Hoho Enterprise. One of the addresses given is 205.16.37.39/28. Identify the first address and the last address in the block of addresses. (4 marks) c) Calculate the total number of address for the given block of addresses identified in b). (2 marks) d) Explain a method to overcome the IPv4 address depletion. (2 marks)