Fundamentals of Computer Networking: Protocols, Devices, and Security

Understanding how data travels across the internet and within organizations is essential for any modern technical role. This course provides a complete foundational understanding of computer networking, focusing on the core models, physical devices, and communication protocols necessary to manage reliable and secure connectivity. By the end of this course, you will possess the vocabulary and conceptual knowledge required to discuss, design, and implement basic network infrastructure. What you'll learn: * Understand the OSI and TCP/IP models and how core protocols like TCP, UDP, and IP function across different layers. * Configure basic network components, including routers and switches, and manage standard addressing schemes using IPv4 and IPv6. * Practice sub-netting and address allocation to efficiently manage resources within a Local Area Network (LAN). * Apply foundational network security principles, including basic firewalling and understanding modern zero-trust architecture concepts. * Analyze common network issues using standard troubleshooting tools and diagnostic techniques. The course begins with foundational terminology and models, progresses through physical device configuration and addressing, and concludes with an introduction to network security best practices and troubleshooting methods. This course is designed for absolute beginners with no prior networking knowledge, including those preparing for entry-level IT roles or seeking a fundamental technical background. Start building your essential networking skills today.