Network Architecture refers to the design and structure of a computer network, encompassing the hardware, software, connectivity, communication protocols, and configurations that enable network functionality. In CompTIA Network+, understanding network architecture is fundamental to building resilient, scalable, and secure networks. Network architectures typically follow layered models like the OSI (Open Systems Interconnection) or TCP/IP models, which organize network functions into logical layers. These models facilitate troubleshooting by isolating issues to specific layers. Key components of network architecture include: 1. Topology: Physical and logical arrangements of network devices (star, mesh, bus, ring, hybrid). 2. Network Infrastructure: Routers, switches, access points, cabling systems, and connectivity technologies. 3. Protocols: Rules governing data transmission (TCP/IP, HTTP, FTP, SMTP). 4. Addressing Schemes: IPv4, IPv6, MAC addressing for device identification. 5. Security Elements: Firewalls, IDS/IPS systems, encryption mechanisms. Network architectures can be categorized as: - Client-Server: Centralized servers providing resources to clients - Peer-to-Peer: Devices functioning as both clients and servers - Cloud-Based: Resources delivered as services over the internet - Software-Defined Networking (SDN): Network management through software abstraction When designing network architecture, professionals must consider: - Scalability: Ability to grow with organizational needs - Reliability: Redundancy and fault tolerance mechanisms - Performance: Bandwidth requirements and latency considerations - Manageability: Ease of administration and monitoring - Compatibility: Integration with existing systems Network+ emphasizes understanding these architectural concepts to implement appropriate solutions for diverse business requirements and technical environments. Proper architecture planning prevents costly redesigns and ensures networks meet current and future organizational needs.

Network Architecture refers to the design and structure of a computer network, encompassing the hardware, software, connectivity, communication protocols, and configurations that enable network funct…

Concepts covered: Routing and Switching, Network Cabling and Transmission, IPv4 and IPv6 Addressing, WAN Technologies, TCP/UDP