Networking

Networking Concepts: From Zero to Exam‑Ready A clear, no‑fluff guide to core networking concepts, ending with a focused 1‑day study plan. What Is a Network? A computer network is a group of devices that communicate to share data and resources. Communication follows rules called protocols . Real world idea: sending a letter works because both sides agree on address format. Networks work the same way. Types of Networks LAN – small area like home, school, office WAN – large area, the internet is the biggest one MAN – city‑scale network PAN – personal devices like phone ↔ earbuds The OSI Model (Very Important) The OSI model explains how data moves from one device to another. Think of it as a delivery pipeline. Physical – cables, signals Data Link – MAC addresses, switches Network –...

UML Modeller Add Class Add Note Association Inheritance Aggregation Composition Delete Clear Save Load Export SVG Snap Grid Help Inspector Select a class, note, or link. Title Stereotype >" autocomplete="off" /> Attributes Methods Quick + Attribute + Method Note Label ...

Favicon Maker: upload, draw, and export (.ICO + PNG) Note: Most platforms accept PNG favicons now, but some still prefer a classic favicon.ico . This tool exports both. Everything runs in your browser. No upload to a server. Step 1: Choose a method You can upload an image, draw from scratch, or upload then draw on top. Mode Upload image Draw Upload + draw Upload (PNG/JPG/WebP/SVG) Background Transparent White Black Image fit Contain (no crop) Cover (crop to fill) Padding (%) Step 2: Edit on canvas Brush size ...

GPU Analysis: pick the right card (with compare + budget tools) Do your own research. This post is a helper, not a rulebook. Prices change daily, used-market deals vary, and your CPU/case/PSU can flip the “best GPU” choice fast. If something here conflicts with a trusted benchmark review, assume the review wins. My ego survives. Your money should too. What makes a GPU “good” (simple but useful) Ignore brand wars. Focus on what you actually do: Resolution + refresh : 1080p high FPS is different from 4K ultra. VRAM : more headroom for high-res textures, mods, and some creator/AI tasks. Efficiency : performance per watt matters for noise, heat, and PSU cost. Upscaling / frame-gen : can be a “free upgrade” in supported games. Encoding : streamers/editors care about AV1/H.264 quality and stability. Drivers + software : stability and features matter as much as raw FPS. ...