Question 2 Machine Network MAC Address IP Address Machine X Network A A4:6E:F4:59:83:AB 157.124.16.20 Router A Network A B2:34:55:10:22:10 157.124.16.254 Router A WAN 1 AC:AE:32:45:73:42 134.17.5.61 Router B WAN 1 E3:45:73:24:2A:CA 134.17.5.102 Router B WAN 2 CA:45:32:76:3B:7E 149.28.18.161 Router C WAN 2 D2:67:34:3B:22:10 149.28.18.122 Router C Network C 45:73:42:AC:AE:32 94.23.56.254 Machine Y Network C Router D WAN 2 45:73:E3:24:2A:CA 94.23.56.25 F4:3D:78:12:83:12 149.28.18.100 Router D Network D A7:34:87:E2:D8:E5 104.86.78.254 Machine Y Network D 104.86.78.100 Machine Y Network A 157.124.16.10 Table 1: Network Configuration a) A company's infrastructure consists of 3 local area networks (LANs), Network A, Network C, and Network D, as well as two wide area networks (WANS), WAN 1 and WAN 2. The details of the system are shown in Table 1 above. All MAC Addresses are fixed. Draw a diagram for this setup. [4 marks] b) Machine X would like to send a message to Machine Y which is initially in Network C. Assuming that all the machines and routers have no ARP cache entries, how many ARP requests and ARP replies do I have to send. Detail the format of the ARP requests and ARP replies for this initial interaction. This study source was downloaded by 100000825789221 from Courseler305 0435-2022 05:42:54 GMT-05:00 https://www.courschero.com/file/145254588/CST-2522-Exam-Paper-Questions-May-2021-22-onlinedocx/ [4 Marks] c) Machine Y now moves from Network C to Network D. Show the new ARP requests and ARP replies needed to maintain the connection between Machine X and Machine Y. [8 Marks] d) Finally, Machine Y now moves to Network A. Show the new ARP requests and ARP replies needed to maintain the connection between Machine X and Machine Y. [4 Marks]