This report provides a comprehensive analysis of the network upgrade for Credit Crunch, a debt recovery company. It begins with an executive summary and introduction, highlighting the need for a robust network to safeguard sensitive client data. The report then delves into the physical layout and network upgrade requirements, including structured cabling and the importance of planning for future growth. It explores various network topologies, such as bus, star, and ring, detailing their advantages and disadvantages. IP addressing and subnetting are discussed, along with the implementation of VOIP. The report concludes with recommendations for the network upgrade and a list of references. The assignment covers critical aspects of network design, implementation, and management, providing a practical understanding of computer networks.