Linux also exists as a console command line edition.
That statement isn't really useful.
"Linux" is a kernel. Its current edition is 6.18.
Various people and organizations package this kernel with various tools, file systems, libraries, shells,installation methods and utilities to create a distribution. And there are literally thousands of these distributions.
While most of them now have a graphic interface component, almost every single one of them has a command line interface underneath. And the ones that don't are not intended for human interaction.
My understanding was that, at least previously, tpl provided certification courses in Linux, which would reasonably include its fundamental foundations.
As the teacher of many of those courses and the co-founder of the certification organization, I'm extremely well acquainted with the relevant subject matter.
They did not ever teach or certify knowledge of about browsers. While certainly important, browsers are simply a category of applications. They have NEVER been a "fundamental foundation" of Linux-based operating systems.
- Evan