Web server To external internet 1 Gbps Mail server 1 Gbps 4 1 Gbps 23 100 Mbps (fiber) 100 Mbps (fiber) 100 Mbps (fiber) Mixture of 10 Mbps 100 Mbps, 1 Gbps Cat 5 cable M Computer Science Electrical Engineering Computer Engineering Consider the institutional network shown in the diagram above. We can see in this network a number of hosts (I've labelled a few of them) are connecting with Ethernet switch. As we know, these switches operate at layer # 2, they switch link layer frames. They don't recognize IP addresses and don't use any routing algorithms. Here, link layer address is used to forward a frame. Let us assume, initially switch don't have any previous information stored that can be used for forwarding these frame to other hosts. a) Briefly describe in series of steps. how a switch in Computer Science department will facilitate communication between hosts 'A' and 'B'. (4) b) Can these switches facilitate communication between nodes 'H' and 'o'? If YES, briefly describe the steps. If No, briefly describe the reason. (3) c) Let us assume host 'F' is physically moved and attached to switch in Computer Science department. Is it possible that node 'F' still remains part of broadcast domain of Dept. of Electrical Engineering? Briefly illustrate your answer. (3)