1 thought on “CompTIA Security+ SY0-301: 1.1 – Routers, Firewalls, and Switches”

  1. Just found your website, wow! Thank you! I am definitely going to recommend your videos and site to all my IT friends.  Your voice and tone are easy to follow.  Great direction and flow of information.  Thank you!  Professor Messer you’ve just earned a lifelong fan!  Everyone spread the word!


Comments are closed.