SJSuraj Jenainsurajjena.hashnode.dev·Feb 15 · 5 min readHow DNS Resolution WorksHow does the browser actually turn google.com into an IP address? It feels instant. You type a name, hit Enter, and the website loads. But under the hood, an elegant multi-layer lookup system kicks into action. This post walks through DNS resolution ...00
SJSuraj Jenainsurajjena.hashnode.dev·Feb 15 · 4 min readGetting Started with cURLHow do programs talk to servers? Every time you open a website, log in, or use an app, your device is talking to a server somewhere on the internet. As programmers, we often want to: Test those conversations Debug APIs Send requests without openin...00
SJSuraj Jenainsurajjena.hashnode.dev·Feb 1 · 5 min readTCP vs UDP: When to Use What, and How TCP Relates to HTTPHow does data actually move across the internet without turning into chaos? Every message you send opening a website, watching a video, joining a call travels as tiny packets across networks you don’t control. To prevent complete anarchy, the interne...00
SJSuraj Jenainsurajjena.hashnode.dev·Feb 1 · 5 min readTCP Working: 3-Way Handshake & Reliable CommunicationWhat Happens If Data Is Sent Without Rules? Imagine sending a stack of letters to a friend without any order or envelopes. Some letters might get lost, arrive out of order, or be duplicated. You’d struggle to understand the message, right? This is wh...00
SJSuraj Jenainsurajjena.hashnode.dev·Feb 1 · 4 min readCSS Selectors 101: Targeting Elements with PrecisionWhy CSS Selectors Are Needed Imagine you are at a big party, and you want to talk to someone. Do you shout randomly? Do you point to one person? Or do you gather a specific group to speak to them? CSS selectors work the same way. They help you “...00
