Programming languages didn’t just appear out of nowhere—they were built by real people, often way younger than you would expect, with ideas that ended up shaping how we write code today. Here is a quick breakdown of popular languages, who created them, when they were made, and how old the creato

In this update, I added four new topics: ✅ SD-WAN architecture ✅ TCP socket lifecycle ✅ How RDMA works ✅ How NIC RSS works These technical topics are essential for network engineers If you already purchased my networking infographic package or ebook, you are covered. You can always use

Ethernet cables come in CAT categories, each one defines bandwidth, speed, and how far you can push data before signal quality drops 😎👆 Find high-res pdf ebooks with all my networking related infographics at https://study-notes.org #ethernet #homelab #networkengineer #networkcable

A MAC address is a 48-bit ID tied to your network interface that lets switches deliver frames to the right device within a local Ethernet network 😎👆 Find high-res pdf ebooks with all my networking related infographics at https://study-notes.org #computernetworking #ethernet #networkeng

Endianness describes how a system orders bytes in memory, and it is a core concept in computer science that affects data encoding, processor design, and cross-platform compatibility. Here is the difference between little-endian vs. big-endian 😎👆 Find high-res pdf ebooks with all my technology

If you are interested in hacking, privacy, or the real-world events shaping today’s connected systems, these cybersecurity documentaries are worth watching 😎👆 Find high-res pdf ebooks with all my cybersecurity related infographics at https://study-notes.org #cybersecurity #hacking #inf

Cybersecurity relies on multiple specialized teams—offensive, defensive, engineering, and oversight—working in coordination to identify threats, strengthen defenses, and maintain overall system security 😎👆 Find high-res pdf ebooks with all my cybersecurity related infographics at https://study-n

pv (Pipe Viewer) is one of those hidden gems on Linux. Just toss it into a pipe (pipes are already super convenient) and you get a live view of progress, speed, and ETA as data flows through 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org #linux

Python is effective for building networking apps as it provides high level socket abstractions, mature protocol libraries, and event driven frameworks Here are useful Python libraries for networking app development 😎👇 Find high-res pdf ebooks with all my networking related infographics at htt

Even on a single-user Linux system, multiple accounts keep root actions separate, run services with least privilege, and let you test things without breaking your main environment. Here are essential Linux commands for user management 😎👆 Find high-res pdf ebooks with all my Linux related info

On Linux, the /var directory stores variable runtime data that keeps changing, such as logs, caches, spool files, and application state. Here are useful directories under /var 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org #linux #sysadmin

Here is a concise reference of Linux shell operators for redirecting, appending, and combining standard input, output, and error streams 😎👇 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org #linux #sysadmin #infosec #devops #softwareengine

Linux PAM (Pluggable Authentication Modules) is a modular system that lets applications handle user authentication and access control through configurable policies, without hardcoding the logic into each program 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https://study-

Yazi is a blazingly fast terminal file manager written in Rust, based on non-blocking async I/O. It aims to provide an efficient, user-friendly, and customizable file management experience within Linux terminals. A strong contender for the best TUI-based file manager title 😎👆 Find high-res pdf

Modern high-speed Ethernet relies on optical transceivers to carry data over fiber for long distances, especially in data centers, enterprise networks, and carrier infrastructure where copper cannot meet speed or reach requirements. Here are two different types of optical transceivers 😎👆 Fin

Android uses a Linux based file system organized into several main areas. /system stores the core OS files, /data holds installed apps and user data, and /storage provides access to internal and external storage where files like photos and downloads live 😎👆 Find high-res pdf ebooks with all my t

Modern terminals extend the classic command line with GPU rendering, modern interfaces, extensibility, and faster performance for everyday shell work. Here is a quick comparison of several popular modern terminal apps 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https

Spanning Tree Protocol (STP) is a network protocol that prevents loops in Ethernet networks by automatically detecting redundant links and placing some of them into a blocking state to maintain a loop-free topology 😎👆 Find high-res pdf ebooks with all my network related infographics at https://s

Here are useful Linux commands for querying hardware information such as hardware vendor, model name or configurations 😎👆 Find high-res pdf ebooks with all my Linux related infographics at https://study-notes.org #linux #technology #computerhardware #computer #software

Podman and Docker are two major container engines that manage and run containers. Docker relies on a central daemon that controls container lifecycle, whereas Podman operates without a daemon and follows a more traditional Linux process model 😎👆 Find high-res pdf ebooks with all my DevOps relate