3. Consider the network shown below. Each of the subnets A-D contains at most 30 hosts; subnet E connects routers R1 and R2. Subnet B: Subnet C: Subnet E: Subnet A: R2 R1 Subnet D: to public Internet via ISP a. Assign network addresses to five subnets shown above (that is, write addresses you have assigned). b. Suppose that there area 17 hosts in A-D. Does your answer change? Why or why not? c. What is the network prefix advertised by router R1 to the public Internet? 3. Consider the network shown below. Each of the subnets A-D contains at most 30 hosts; subnet E connects routers R1 and R2. Subnet B: Subnet C: Subnet E: Subnet A: R2 R1 Subnet D: to public Internet via ISP a. Assign network addresses to five subnets shown above (that is, write addresses you have assigned). b. Suppose that there area 17 hosts in A-D. Does your answer change? Why or why not? c. What is the network prefix advertised by router R1 to the public Internet