2) Link layer (and network layer) addressing and forwarding (4 pts) Consider the figure below. The IP and MAC addresses are shown for nodes A, B, C and D, as well as for the router's interfaces. F9-04-58-FD-BC-59 128.119.185.47 (1) 91-52-3E-8D-2E-BO 128.119.16.253 B (2) D9-FF-7D-FC-E8-67 128.119.185.219 Consider an IP datagram being sent from node A to node D. 1. What is the source mac address at point 1? Answer: 2. What is the destination mac address at point 1? Answer: 3. What is the source IP address at point 1? Answer: 4. What is the destination IP address at point 1? Answer: (3) 7. What is the source mac address at point 4? Answer: 3F-5A-D9-00-31-F6 128.119.16.80 25-87-88-90-C9-ED 128.119.92.202 8. What is the destination mac address at point 4? Answer: (4) EB-AO-FA-OA-FE-F4 128.119.92.145 (6) (5) C 5. Do the source and destination mac addresses change at point 2? Answer with yes or no. Answer: C6-13-14-58-A4-48 128.119.92.137 6. Do the source and destination mac addresses change at point 4? Answer with yes or no. Answer: 9. Do the source and destination mac addresses change at point 5? Answer with yes or no. Answer: