Network+ - Ping Labz

OSPF Basics – Introduction to OSPF: How It Works and Why It Matters

OSPF is the link-state protocol that runs most modern enterprise networks. Here is how it works, why it beats distance-vector protocols, and where to use it.

8 min read Feb 23, 2025

Network+ public

Understanding IPv4: The Internet’s Original Addressing System

J

IPv4 gives every networked device a 32-bit address split across classes and subnets. Here is how IPv4 addressing works, why it still runs the internet, and its limits.

2 min read Dec 23, 2024

Comptia public

7 Essential OSI Model Layers: Complete Guide for Network Beginners

J

The OSI model's seven layers explain how data moves from application to wire. Here is each layer, the key protocols, and how to use the model for troubleshooting.

2 min read Dec 23, 2024

Comptia public

Straight-Through vs Crossover Ethernet Cables: A Clear Guide

J

Straight-through cables connect PC to switch or router; crossover cables connect like to like. Here is the pinout, color code, and when Auto-MDIX makes it moot.

1 min read Dec 23, 2024