--- title: Networking 101: A Basic Overview of Packets and OSI description: A beginner-friendly introduction to computer networking fundamentals, covering how data is transmitted using binary, the difference between bus and packet... canonical: https://daily.dev/posts/networking-101-a-basic-overview-of-packets-and-osi-mmobddi8l twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Networking 101: A Basic Overview of Packets and OSI | daily.dev og:description: A beginner-friendly introduction to computer networking fundamentals, covering how data is transmitted using binary, the difference between bus and packet... og:url: https://daily.dev/posts/networking-101-a-basic-overview-of-packets-and-osi-mmobddi8l og:image: https://api.daily.dev/og/posts/mMoBddI8l.png og:image:alt: Networking 101: A Basic Overview of Packets and OSI og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Networking 101: A Basic Overview of Packets and OSI **[Playful Programming](https://daily.dev/sources/playfulprogramming)** · 11 min read · 0 upvotes · 0 comments ## Summary A beginner-friendly introduction to computer networking fundamentals, covering how data is transmitted using binary, the difference between bus and packet architectures, and an overview of the seven-layer OSI model. Each OSI layer (Physical, Data Link, Network, Transport, Session, Presentation, Application) is explained using a postal mail analogy to make abstract concepts accessible. This is the first post in a series that will explore networking in greater depth. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#networking](https://daily.dev/tags/networking) [View this post on daily.dev](https://daily.dev/posts/networking-101-a-basic-overview-of-packets-and-osi-mmobddi8l) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Networking 101: A Basic Overview of Packets and OSI","url":"https://daily.dev/posts/networking-101-a-basic-overview-of-packets-and-osi-mmobddi8l","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/networking-101-a-basic-overview-of-packets-and-osi-mmobddi8l"},"datePublished":"2026-03-16T21:47:09.753Z","dateModified":"2026-03-16T21:55:21.290Z","description":"A beginner-friendly introduction to computer networking fundamentals, covering how data is transmitted using binary, the difference between bus and packet...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/4abbbf686915bc6dbf03781136746d20?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/4abbbf686915bc6dbf03781136746d20?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Playful Programming","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Playful Programming","logo":"https://media.daily.dev/image/upload/s--WoGOmY81--/f_auto,q_auto/v1773697582/logos/playfulprogramming?_a=BAMAMiiu0","url":"https://daily.dev/sources/playfulprogramming"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/networking-101-a-basic-overview-of-packets-and-osi-mmobddi8l","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"networking","timeRequired":"PT11M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Playful Programming","item":"https://daily.dev/sources/playfulprogramming"},{"@type":"ListItem","position":3,"name":"Networking 101: A Basic Overview of Packets and OSI"}]} ```