Episode 14: OSI Layer 3 — The Network Layer

This episode focuses on the Network Layer of the OSI model, where logical addressing and routing decisions occur. It explains how Internet Protocol (IP) operates at this layer, enabling data to move between networks rather than just between directly connected devices. Key functions such as addressing, packet forwarding, and path determination are introduced, providing the foundation for understanding how routers manage traffic across complex environments. Recognizing the role of the Network Layer is essential for interpreting both exam questions and real-world architectures.

Practical applications are discussed, including the use of subnetting to organize IP addresses, the role of routing tables in selecting paths, and the differences between IPv4 and IPv6 addressing. You will also see how errors at this layer manifest, such as misconfigured gateways or routing loops, and how they can be diagnosed. By mastering the concepts of the Network Layer, you build the skills needed to analyze data flows and ensure proper connectivity across diverse network topologies. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your certification path.