Welcome to Nexus

My personal blog where I share my thoughts on web development, programming, and technology.

Featured

• Understanding STP and PVSTP: Loop Prevention in Ethernet Networks

  25 Jan, 2026

  A beginner-friendly deep dive into Spanning Tree Protocol (STP) and Per-VLAN Spanning Tree Plus (PVST+) and how they prevent loops in Layer 2 networks.

• VLAN Trunking Explained: How Multiple VLANs Travel Over a Single Link

  24 Jan, 2026

  A beginner-friendly but practical guide to VLAN Trunking, 802.1Q tagging, access vs trunk ports, native VLAN, and real-world use cases.

• TCP Three-Way Handshake

  21 Jan, 2026

  The TCP three-way handshake is a three-step process (SYN, SYN-ACK, ACK) that establishes a reliable, synchronized connection between a client and server before data transfer begins.

• Unraveling Linux File Permissions: A Beginner's Guide

  27 Oct, 2023

  Demystify Linux file permissions (rwx) for users, groups, and others, and learn to manage them with chmod and chown.