This assignment delves into the intricacies of internetworking using the TCP/IP protocol, examining the OSI reference model and its layers, including the physical, data link, network, transport, session, presentation, and application layers. The assignment further explores the hardware and software aspects of these layers, highlighting the alignment of the TCP/IP model's internet layer with the OSI model's network layer. A significant portion of the assignment focuses on a network design diagram for Advanced Digital Computer, detailing IP addressing schemes using CIDR, and subnetting across various network segments, including Yellow, Cyan, Grey, Purple, Gold, Orange, Silver, and Blue, along with their respective network hosts, decimal masks, broadcast addresses, gateway IPs, and printer IPs. The assignment concludes with the IP addressing of WAN networks, including Red, Green, and Aqua, and includes comprehensive references.