Task 1: Network Design and Plan Design and configure routers and hosts (but switches) in the network by allocating each IP addresses in an appropriate and minimal range (to maximise the spare ranges for future use) as shown in Figure 1 using Packet Tracer, and verify the connectivity fully works across the network including inter and intra networks. Notes: 1. Use ping to verify connectivity successful status from PC1 to PC10. 2. Display names and IP addresses of devices and interfaces on the Packet Tracer screen. 3. Use/design smallest subnet mask for each subnet where possible. 4. Show the subnetting scheme (i.e., clarify how to determine the smallest subnet mask) in a single page in your presentation. Please also list the used IP addresses, default gateway, and broadcast addresses. Task 2: Layer 2&3 Implementation and Analysis In Subnet A, redesign and configure the network to allocate two PCs into VLAN10 and the other two PCs into VLAN 20 by allocating each IP addresses in an appropriate range and configuring the switch interfaces. 1. Check connectivity within the same and different VLANs. 2. Demonstrate how Layer 2 and Layer 3 work differently by enabling and disabling Router1s left interface and analyse the results and explain why it was a success or failure. 3. Explain the motivation of using VLANs. In Subnet C, clear the ARP table of PC7, and ping from PC7 to PC5 in subnet B. Evaluate and analyse how Layer 2 and Layer 3 addresses (source and destination) are allocated in each networks ingress and egress interfaces. 1. Explain why ARP protocol is used? 2. Clarify the default gateway of PC5. 3. Explain what address is and is not changed at Router2s interfaces with Subnet B and C?Why?