Fundamentals Subnetting Made Simple: A Step-by-Step Guide to IPv4 and CIDR
Subnetting looks intimidating until you see the pattern behind it. This guide walks you through IPv4 and CIDR step by step, with the block…
11 min readRead
Archive
Tag: CCNA
Guides and tutorials from Network Admin Journey.
Fundamentals 
Infrastructure How to Build a Home Network Lab on Any Budget
A home network lab is the fastest way to turn theory into real skills. Learn how to choose between physical gear and virtual platforms…
12 min readRead
Career A 90-Day CCNA Study Plan That Actually Works
Passing the CCNA in 90 days is realistic with a clear structure and consistent daily practice. This week-by-week plan maps every block of study…
12 min readRead
Routing & Switching OSPF Fundamentals: Areas, LSAs, Neighbor States and Configuration
OSPF is the interior routing protocol you will meet in almost every enterprise network. This practical guide explains areas, LSA types, neighbor states and…
14 min readRead