In this episode of the Backend Engineering Show, I’ll explain the OSI Model with an example. I start with the physical layer which is often ignored moved up to the application layer, presentation layer, session layer, transport layer, IP layer, and data link layer. I believe every software engineer should understand the OSI Model as it helps cement the fundamental understanding of networking applications.

Intro 0:00

Layer 1 Physical 4:00

Layer 7 Application 9:45

Layer 6 Presentation 11:30

Layer 5 Session 14:20

Layer 4 Transport 15:00

Layer 3 IP 18:00

Layer 2 Data Link 20:00

Summary 28:00

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