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SKSreeram K Scode-as-a-story.hashnode.devMay 26 · 7 min read

Networking Basics — HTTP, TCP/IP

Story Time Imagine you want to send a letter from Chennai to your friend in Delhi. You write the message, put it in an envelope, write their address, and hand it over to a courier service. Now think a

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ZHZahid Hasan Emranzdev.hashnode.devApr 12 · 5 min read

Async and Defer Execution Order

Before we deep dive, we need to know some differences. 1. The Main Thread is "Busy," Not necessarily "Blocked" Parsing HTML is the primary job of the main thread when a page first loads. While the bro

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AGAaditya Goelbaki-bytes.hashnode.devFeb 1 · 4 min read

How a Browser Works: A Beginner-Friendly Guide to Browser Internals

What Actually Happens When You Type a URL and Press Enter? Let’s start with a simple question 🤔 “What happens after I type a URL and press Enter?” Most people say: “The browser opens the website.” But that’s only the final result. Behind the scene...

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AGAaditya Goelbaki-bytes.hashnode.devFeb 1 · 4 min read

TCP vs UDP vs HTTP – Understanding How Data Moves on the Internet (Simply)

Let’s start with a very basic idea 👇 Why does the internet need rules to send data? Imagine millions of people talking at the same time. If everyone just shouted messages randomly: messages would collide some messages would be lost order would be...

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AGAaditya Goelbaki-bytes.hashnode.devFeb 1 · 4 min read

What Is TCP and How Does It Actually Work? The 3-Way Handshake(Beginner Friendly)

First question: what if data was sent without any rules? 🤔 Imagine you’re sending a long message to your friend using many small chits of paper. But: some chits get lost some arrive late some arrive in wrong order some arrive twice Your friend...

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MAMinsu Agrahariminsu-agrahari-computer-network.hashnode.devJan 30 · 5 min read

DNS and Records

Hey, Readers have you ever though about how does a simple URL in the search bar tells your browser which website to load, what to load and which pixel to turn on and off. Have you ever thought how does the a simple URL, communicate with the server an...

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SSSomnath Satapathysat-apathycohort.hashnode.devJan 30 · 4 min read

CSS Selectors 101: Targeting Elements with Precision

When you start learning CSS, one question keeps coming up again and again: “How does CSS know what to style?” That’s where CSS selectors come in. Selectors are the backbone of CSS. If HTML is the structure of a house, selectors are how you point and ...

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PRPramith Rfrontendinsights.hashnode.devJan 27 · 3 min read

Understanding HTML Tags and Elements

What HTML Is and Why We Use It HTML (HyperText Markup Language) is the skeleton of webpage. It is like the basic structure (skeleton) of a website.When we open any website, behind everything, HTML is there.HTML tells what things will come on out page...

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JJJatin Jhariyajxdoc.hashnode.devJul 17, 2025 · 5 min read

Essential Internet Technologies: A Complete Guide

Understanding how the internet works can seem overwhelming, but breaking down the key technologies makes it much clearer. This guide explains ten fundamental concepts that power our digital world, from the protocols that move data to the systems that...

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JJebitoksharonjebitok.comFeb 28, 2025 · 12 min read