Question 4 (25 marks) a) Figure 2 shows the TCP segment transmission between Host A and Host B. How do Host A and Host B react if the second segment sent by Host A to Host B is lost? (5 marks) Host A Host B First segment (SeqNo s 1369), 400 bytes ACK AckNo = 1769 Second segment (SegNo= 1769), 500 bytes Figure 2 b) Figure 3 shows the existing VLAN setup at your company. Only computers on the same VLAN can communicate between them. As a Network Engineer, you are assigned a task to improve the network so that computers on different VLANs can communicate. Propose two solutions for the given task. Which solution will you choose? Justify your answer. (10 marks) PVID10 PVID10 PVID20 Host_1 Host_2 Host_3 Figure 3 Question 4 (25 marks) a) Figure 2 shows the TCP segment transmission between Host A and Host B. How do Host A and Host B react if the second segment sent by Host A to Host B is lost? (5 marks) Host A Host B First segment (SeqNo s 1369), 400 bytes ACK AckNo = 1769 Second segment (SegNo= 1769), 500 bytes Figure 2 b) Figure 3 shows the existing VLAN setup at your company. Only computers on the same VLAN can communicate between them. As a Network Engineer, you are assigned a task to improve the network so that computers on different VLANs can communicate. Propose two solutions for the given task. Which solution will you choose? Justify your answer. (10 marks) PVID10 PVID10 PVID20 Host_1 Host_2 Host_3 Figure 3