Answer the following questions for each of the cases below: Notes: - This is a theoretical scenario in which we assume that all switch tables and arp tables are empty. - We also assume all router interfaces are configured with correct IP's, switched on and the routing table is complete. - Moreover, we assume all PCs are configured with correct IPs, subnet masks, and default gateways. - The main objective is to master how both the switch tables and arp tables are dynamically built. Cases: - Case 1: A send message to D - Case 2: D replies - Case 3: B send message to D - Case 4: B send message to A 1- Will the MAC address of C be included in the switch table of the left switch? 2- How many entries/rows will be in each switch table? Why? 3- A sends a message to C; What is the frame content, when sent by router