Definition
Network Design is the process of planning and creating the architecture for a computer network, encompassing its physical and logical components. It involves defining how devices connect, data flows, and security measures are implemented to meet specific organizational needs. This design dictates the network's performance, scalability, and resilience. In practice, network design translates requirements into detailed schematics and configurations for routers, switches, firewalls, and cabling. Understanding network design is crucial for IT professionals to build robust, efficient, and secure infrastructure that supports business operations. For example, designing a corporate network might involve segmenting user traffic from server traffic using VLANs and firewalls. This differs from network configuration, which focuses on setting up individual devices according to an established design. Network Design is a core concept tested on certifications like Security+, Network+, and CISSP.