A digital assessment seems like a vague term to me, but I assumed you are being tested on skills relating to how well you can use technology, software, and/or code.
I personally know css, html, c, c++, c#, objective-c, SQL, PHP, python, java, javascript, swift, Lua, lisp, pascal, multiple dialects of basic, fortran, cobol, algol, and a few others. I know some of them aren't popular programming languages currently and multiple of them likely have updated versions from what I learned, but I like to think I’m pretty technology literate.
Regardless of whatever you are being tested on, I hope it goes well or if you already took your test, I hope it went well.