My Preparation for the Wireshark WCNA Exam

In this article I explain how I am preparing for the Wireshark WCNA exam. Study resources 1- Laura Chappell’s WCNA Official Study Guide (here) This is one of the best certification study guides I’ve ever read in IT. I loved Laura’s writing style. She sounds friendly and relaxed. No dry text. It sounds as if … Read more

A Domain Name System Tutorial

Here is a collection of my study notes on the Domain Name System protocol. DNS Hierarchy and Database Remember the format of a URL: The Domain Name System protocol is hierarchical. It’s not flat. If you’ve worked with UNIX and Linux file systems, you’ll notice there is a similarity. The next thing you’ll notice is … Read more