Packet Switching Networks: Architecture and Routing Algorithms

Every time you load a webpage or send a message, millions of data packets navigate complex global networks in milliseconds. Understanding the underlying mechanisms and algorithms that direct this traffic is essential for anyone building a career in networking, systems architecture, or software engineering. This course guides you through the inner workings of packet switching networks, from basic terminology to the core algorithms that keep the internet running. You will develop a strong conceptual framework for how networks route information, manage traffic flow, and interface with higher-level communication protocols. What you'll learn: - Understand the fundamental principles of packet switching, network topologies, and layered architectures. - Analyze internal network operations, including addressing schemes and packet forwarding mechanisms. - Apply classic routing algorithms, including distance-vector and link-state protocols. - Evaluate how packet networks provide reliable services to the transport layer. - Explore modern networking paradigms, including basic Software-Defined Networking (SDN) and contemporary congestion control concepts. You will begin with essential networking terminology and foundational definitions before diving into the logical algorithms that govern path selection and traffic management. The material progresses systematically from single-node operations to global routing protocols and modern programmable network architectures. This course is designed for aspiring network engineers, software developers, and technology enthusiasts who want a clear, beginner-friendly introduction to network algorithms. No prior networking experience is required. Start reading today to unlock the core principles of modern digital communication.