---
title: "Discussion on \"Physical Layer (Layer 1) — The Roads & Signals of Networking\" | Hashnode"
description: "Discussion on \"Physical Layer (Layer 1) — The Roads & Signals of Networking\". A friendly, simple-but-technical look at the Physical Layer: what it does, its history, media, transmission types, and why it still matters."
url: "https://hashnode.com/posts/physical-layer-layer-1-the-roads-and-signals-of-networking/68c99a2f009f2701030d413b"
---

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# [Physical Layer (Layer 1) — The Roads & Signals of Networking](https://ayushmangarg.hashnode.dev/physical-layer-layer-1-the-roads-and-signals-of-networking?utm_source=hashnode&utm_medium=feed)

A friendly, simple-but-technical look at the Physical Layer: what it does, its history, media, transmission types, and why it still matters.

Sep 16, 2025 · 6 min read · ayushmangarg.hashnode.dev  
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-   [#computer-networking](https://hashnode.com/tag/computer-networking)
-   [#computer-science](https://hashnode.com/tag/computer-science)
-   [#osi-model](https://hashnode.com/tag/osi-model)
-   [#tcp](https://hashnode.com/tag/tcp)
-   [#physical-layer](https://hashnode.com/tag/physical-layer)

## Written by

[Ayushman Garg](https://hashnode.com/@ayushmangarg)

@ayushmangarg · Delhi, India

  
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@ayushmangarg

👨‍💻 MERN Stack Developer | 💻 Python | 🌐 Open Source | 📝 Blogs/ ✍️Threads |🎓MPS'21 | 👨‍🎓 MAIT'25

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