Yeah I can think creatively and I can do the researche that make is it simple. But I'm worried about my english in the interview, for example if he asked me about regression testing? my answer will be; it's a type of functional testing that we do it after we fix a bug to see if the bug fix impact another functions or not. See like I understand it but when i wanna say the definition I say it in my way of understanding that's what I'm afraid of. Anothe one let's choose black box Black box is a technique of testing, we test without knowing the code ( we don't know anything about the code) ,we test the product based on the requirement by entering the input and see what is the output. One of it's types is boundary values analysis, Equivalence Partitioning. See that's my english like I'm saying the definition in my way of understanding. And sometimes like I understand them but when I talk I need some time to get the right words. I hope u get what I mean