I have spent some time working on projects in which these technologies were employed. I consider myself to have “dabbled” in these areas. I am familiar with these technologies, but still find myself on the steep part of the learning curve.

I have spent a significant amount of time developing the skills and working with the technologies in this category. Many of these are used peripherally in most projects that I work on, but are not the focus of the project. Linux server administration and maintenance is an example of this. Other items in this list[…]

I have spent the majority of my time developing the skills and working with the technologies in this category.  I have completed numerous projects involving these skills or technologies.