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osi model layers explained

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369 Days Networking HACKER DUALITY : CODE OF CONDUCT

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on July 18, 2025

Day 8 – OSI Layer 1: Physical Layer

📅 Day 8 – OSI Layer 1: Physical Layer 🏷️ Topic: Physical Layer (OSI Layer 1) 🔍 Key Concept: Cables, Signals, Ports ✍️ Caption: “This is the battlefield where real communication begins — wires, waves, ports.” ⸻ 🪖 Welcome to the Frontline: The Physical…