2022 Update: If you want a clear technical explanation of the OSI model, click on the cover of my book CCNP Enterprise Certification Study Guide: Implementing and Operating Cisco Enterprise Network Core Technologies for a free preview of Chapter 1 which explains each layer of the OSI model in intricate detail. I …

Most of us have tossed around the idea of restricting our social media consumption, or even giving it up altogether. It’s not that we don’t like it. We love it, sometimes too much. But inherently, something about social media just seems wrong. But what is it? Social is Not a Neutral Tool People often say that social …

As 2018 draws near, companies go into hiring mode, and people come and go, which often leaves a lot of open positions. If you qualify to fill one of the more in-demand positions, you can often negotiate a higher salary. My biggest salary jumps have always come in the first quarter of the year. To increase your chances …

Certifications are often lambasted as “worthless pieces of paper” and “experience is more important.” But for some people, certifications are more important than experience. A substitute for experience Newcomers to the IT world face the classic problem: how do you get experience without a job? Sure, you can tinker …

Years ago when I was active on twitter, I made a few passing observations about this strange place called Twitter:

1. “A lot of people follow me for a few days then unfollow me if I don’t follow them back”

There are so many things wrong with this. Following someone just so they’ll follow you back is selfish. It’s pretty …