L1, L2, L3 Layer Protocols — The Foundation of Networking Explained Simply Ever wondered how data travels from one device to another — flawlessly, every second? That’s where the magic of Layer 1, Layer 2, and Layer 3 protocols comes in. 📡 Layer 1 (Physical Layer) – Deals with cables, signals, and hardware. ➡️ Protocols: Ethernet, DSL, SONET, USB 🔗 Layer 2 (Data Link Layer) – Ensures data is error-free and properly framed for delivery. ➡️ Protocols: ARP, PPP, Frame Relay, VLAN, STP 🌍 Layer 3 (

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14K views · 2.1K reactions | WAZE expat for Singapore  routing ️ #singapore#sgroad#waze#explore#foryoupage#sg | Hari Thirupathi | Facebook

Three Hours of routing, 12 nets to go 😬 Follow @electronicsloop to see the completed PCB files 🙌 #pcbassembly #pcbdesign #soldering #reverseengineering #electronica | Electronics Loop