--- title: "#physical-layer articles | Hashnode" description: "Explore 10 articles tagged #physical-layer on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/physical-layer" --- Tag # #physical-layer 10 posts · 0 followers [Aeon Flex / Splicer Scorn](https://hashnode.com/@voidrane) · [Nov 28, 2025](https://hashnode.com/posts/why-master-locks-are-security-theater-a-locksmiths-confession/692987bce3a25ac4083e13ec) ### [Why Master Locks Are Security Theater: A Locksmith’s Confession](https://chaincoder.hashnode.dev/why-master-locks-are-security-theater-a-locksmiths-confession?utm_source=hashnode&utm_medium=feed) I am about to confess something that locksmiths whisper only to each other. Master Locks- they're security theater at best. 10 min read · [chaincoder.hashnode.dev](https://chaincoder.hashnode.dev/why-master-locks-are-security-theater-a-locksmiths-confession?utm_source=hashnode&utm_medium=feed) [박서경](https://hashnode.com/@eumgil) · [Sep 27, 2025](https://hashnode.com/posts/physical-layer-and-data-link-layer/68d7dda28a036ee4d43e3bf5) ### [Physical Layer and Data Link Layer](https://psk-study.hashnode.dev/physical-layer-and-data-link-layer?utm_source=hashnode&utm_medium=feed) In computer networks, the Physical Layer and the Data Link Layer sit at the bottom of the OSI 7-layer model. They define how data is actually transmitted across the medium. In this chapter, we will go through Ethernet, NICs and cables, hubs, and swit... 4 min read · [psk-study.hashnode.dev](https://psk-study.hashnode.dev/physical-layer-and-data-link-layer?utm_source=hashnode&utm_medium=feed) [Ayushman Garg](https://hashnode.com/@ayushmangarg) · [Sep 16, 2025](https://hashnode.com/posts/physical-layer-layer-1-the-roads-and-signals-of-networking/68c99a2f009f2701030d413b) ### [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. 6 min read · [ayushmangarg.hashnode.dev](https://ayushmangarg.hashnode.dev/physical-layer-layer-1-the-roads-and-signals-of-networking?utm_source=hashnode&utm_medium=feed) [Maruti M](https://hashnode.com/@V8knight) · [Aug 30, 2025](https://hashnode.com/posts/august-2025/68b99131c120598c3ec5970e) ### [August Highlights](https://breachforce.net/august-2025?utm_source=hashnode&utm_medium=feed) August covered Networking Basics and Hardware Hacking 9 min read · [breachforce.net](https://breachforce.net/august-2025?utm_source=hashnode&utm_medium=feed) [Vignesh J](https://hashnode.com/@vignesh-j) · [Aug 9, 2025](https://hashnode.com/posts/understanding-the-data-link-and-physical-layers-the-final-step-in-mastering-osi-model-and-computer-networking/68976d75155712c2a035a1eb) ### [Understanding the Data Link and Physical Layers: The Final Step in Mastering OSI Model and Computer Networking](https://vignesh-j.hashnode.dev/understanding-the-data-link-and-physical-layers-the-final-step-in-mastering-osi-model-and-computer-networking?utm_source=hashnode&utm_medium=feed) This is the eighth and final part of the computer networking series. Check out the previous parts if you haven't. In this part, we'll see about: Data Link Layer Physical Layer Table of Contents Data Link Layer Physical Layer Conclusion ... 3 min read · [vignesh-j.hashnode.dev](https://vignesh-j.hashnode.dev/understanding-the-data-link-and-physical-layers-the-final-step-in-mastering-osi-model-and-computer-networking?utm_source=hashnode&utm_medium=feed) [vikram chaudhary](https://hashnode.com/@bestcloudarchitect) · [Feb 9, 2025](https://hashnode.com/posts/osi-model-layer-1-physical-layer/67a8cf83c7b470556c2113b7) ### [OSI Model Layer 1 - Physical Layer](https://bestcloudarchitect.dev/osi-model-layer-1-physical-layer?utm_source=hashnode&utm_medium=feed) Physical layer is the most fundamental layer of the OSI model. This layer takes care of network transmission with some limitations. 2 min read · [bestcloudarchitect.dev](https://bestcloudarchitect.dev/osi-model-layer-1-physical-layer?utm_source=hashnode&utm_medium=feed) [Anjaneya](https://hashnode.com/@anjaneyamaroju) · [Jan 19, 2025](https://hashnode.com/posts/osi-model-data-transmission-layers/678cb5b23cd2396c293ef98d) ### [OSI Model & Data Transmission Layers.](https://iso-model-network.hashnode.dev/osi-model-data-transmission-layers?utm_source=hashnode&utm_medium=feed) The Open Systems Interconnection (OSI) model is a conceptual framework developed by the International Organization for Standardization (ISO) to standardize communication functions in telecommunication and computing systems. Its primary purpose is fac... 1 min read · [iso-model-network.hashnode.dev](https://iso-model-network.hashnode.dev/osi-model-data-transmission-layers?utm_source=hashnode&utm_medium=feed) [Chinnayya Chintha](https://hashnode.com/@Chinnayya) · [Dec 23, 2024](https://hashnode.com/posts/understanding-the-osi-model/6769259fdd972bc46eafb9b6) ### [Understanding the OSI Model](https://basics-networking.hashnode.dev/understanding-the-osi-model?utm_source=hashnode&utm_medium=feed) To develop a comprehensive understanding of the OSI model and the TCP/IP stack, let’s break down each of the seven layers of the OSI model, the four layers of the TCP/IP model, and how they relate to each other. OSI Model (7 Layers) The OSI model is ... 6 min read · [basics-networking.hashnode.dev](https://basics-networking.hashnode.dev/understanding-the-osi-model?utm_source=hashnode&utm_medium=feed) [Anubhav Kumar Gupta](https://hashnode.com/@anubhav2103) · [Sep 9, 2024](https://hashnode.com/posts/what-is-the-osi-model-basics-of-network-communication/66cb189e32194bb0a09061bd) ### [What is the OSI Model? Basics of Network Communication:](https://anubhav2103.hashnode.dev/what-is-the-osi-model-basics-of-network-communication?utm_source=hashnode&utm_medium=feed) Understanding the OSI Model. The OSI Model, short for Open Systems Interconnection. It is a Model for understanding and designing a Network Architecture. It is framework that describes the functions of a communication system and how different laye... 6 min read · [anubhav2103.hashnode.dev](https://anubhav2103.hashnode.dev/what-is-the-osi-model-basics-of-network-communication?utm_source=hashnode&utm_medium=feed) [OLPU KRISHNAVENI](https://hashnode.com/@olpu) · [Aug 5, 2024](https://hashnode.com/posts/physical-layer-protocols-in-osi-reference-model/66b0689d6d7a1de24fb4dbca) ### [Physical Layer Protocols in OSI Reference Model](https://olpukrishnaveni.hashnode.dev/physical-layer-protocols-in-osi-reference-model?utm_source=hashnode&utm_medium=feed) 1.Ethernet (IEEE 802.3): \*Ethernet is the most widely used LAN technology. It supports a variety of data rates, including 10 Mbps, 100 Mbps, 1 Gbps and 10 Gbps. \*It uses twisted-pair cables or fiber optics. \*It uses various encoding schemes like manc... 2 min read · [olpukrishnaveni.hashnode.dev](https://olpukrishnaveni.hashnode.dev/physical-layer-protocols-in-osi-reference-model?utm_source=hashnode&utm_medium=feed)