This is a test of your communication skills. Being able to break down complex concepts in a coherent and thorough manner is a skill. How well you communicate is of particular interest to them, as someone who is an excellent communicator is a desirable asset for any business.

Before your interview, record your voice while you answer some of these questions. Don't write down your answers and read them, but answer them live. Then play it back and write down all of your speech crutches and how many times you used them. Words such as, "Like," "um," "you know," "so on and so forth," "and," "well," "but," "so," "ah," "er," "literally," "actually," and "basically. " Identify the speech-crutch words you use the most, and practice answering without using those words. Whenever you find yourself struggling against them, just pause instead. This will present you as a clearer communicator and more of a professional.