This report details the design and implementation of a network for Speedfix.co.uk, addressing the company's needs for separate departments (Finance/HR, Sales, Engineers, Admins, and Wireless) and servers. The report covers the evaluation of network models, technologies, and protocols, including the use of VLANs for network segmentation and security. It includes the use of Cisco Packet Tracer for network simulation, the selection of a three-layer hierarchical network model, and the creation of an IP addressing scheme with subnetting. The report further describes the configuration of a Layer 3 switch as a VTP server and Layer 2 switches as clients, along with the configuration of a router with DHCP and ACLs. The design also incorporates IoT devices for monitoring and security. The report concludes with testing and documentation, providing a comprehensive overview of the network design and troubleshooting process.