Task 2: Briefly Describe the Process of Sending Packets from Host A to Host D.

Process of packets sent from host A to host D:

The IP address of host D is requested by host A to send a packet from host A to the destination which is host D. Host A will send an ARP request to the network with the destination IP address. If the destination IP is a local IP, the destination host will reply to host A with its MAC address or if the IP belongs to a global network, the gateway router will reply with its own MAC address.

With the MAC address replied, the packet can be transferred until the hub. The hub will determine the port and the MAC address of the destination. If it cant determine it, the packet will be flooded to every single port, guaranteeing the arrival of the packet.