Computer Networks: Core Fundamentals and Protocols

Computer networking powers every digital interaction, yet its underlying mechanisms often seem complex to newcomers. This course breaks down the architecture of modern networks into clear, structured concepts that anyone can grasp. You will develop a solid understanding of how devices communicate, how data travels across the globe, and how modern security standards protect information. What you will learn: Understand foundational networking concepts, the OSI model, and the TCP/IP stack. Analyze IP addressing, subnetting, and modern IPv6 standards. Explore core protocols including TCP, UDP, DNS, and HTTP/3. Examine how routing and switching direct data across local and global networks. Grasp essential network security concepts, including TLS encryption and zero-trust principles. Practice diagnostic thinking through written exercises and technical scenario breakdowns. The course starts with fundamental definitions and architecture models before guiding you through protocol layers, data routing, and security practices. Designed specifically for beginners in IT, systems administration, and software development, this course requires no prior networking background. Start reading today to master the building blocks of modern computer networks.