The OSI Model breaks a network into seven layers, each with a specific job — from raw electrical signals all the way up to the apps we touch. The whole point is structure: every layer has one role, one responsibility, and one neighbor above and below.

That structure makes troubleshooting easier, new tech easier to understand, and communication predictable instead of chaotic.

In this episode:

• Why the OSI Model exists

• How the seven layers split hardware-level bits, frames, packets, segments, sessions, formats, and final user interactions

• The difference between upper layers (software-driven) and lower layers (transport-driven)

• Real protocols mapped to each layer

• OSI vs TCP/IP — where the theory meets real-world networking

• Why modular networking still shapes every modern system today

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