Answer the question according to the figure below. Give full and complete answer. A B 111.111.111.111 74-29-9C-E8-FF-55 222.222.222.222 49-BD-D2-C7-56-2A 222.222.222.220 1A-23-F9-CD-06-9B 111.111.111.112 CC-49-DE-DO-AB-7D 111.111.111.110 E6-E9-00-17-BB-4B 222.222.222.221 88-B2-2F-54-1A-OF While sending datagram from B to A via R, please explain i. how B knows A's IP address? W ji. how B knows IP address of first hop router, R? how B knows R's MAC address? iv. Give the source and destination Ethernet addresses, as well as the source and destination addresses of the IP datagram encapsulated within the Ethernet frame at points (1), and (2) in the figure above