Development

Chap1 - DB - Conceptual Modeling

Learn the fundamentals of the Entity-Relationship (E/R) model: understand entities, attributes, relationships, and cardinalities. Build and optimize conceptual E/R diagrams for efficient database design.

10 Oct 2025 69 views

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Network

Understanding Wi-Fi (Wireless Fidelity)

In the wired world, we're talking about IEEE 802.3. But the moment we cut the cable, we move into IEEE 802.11 — the world of wireless communication: Wi-Fi, Bluetooth, and friends.

02 May 2025 483 views

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Network

Understand Spanning Tree Protocol (STP)

Understand everything about Spanning Tree Protocol (STP): how the network avoids loops, how to find the Root Bridge, calculate which ports to block, and why RSTP is a thousand times better.

26 Apr 2025 458 views

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Network

QUIC: The Future Network Protocol, Already Here Today

QUIC (Quick UDP Internet Connections) is a modern network protocol that redefines how data is transmitted over the internet. It is designed to overcome the limitations of TCP and UDP, while integrating security and multiplexing features that were previously handled separately by protocols like TCP and TLS. In this article, we’ll take a deep dive into how QUIC works, its integration with HTTP/3, its place in the OSI model, and how it’s already deployed on sites like hwiki.xyz.

17 Apr 2025 445 views

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