Focus on showing how you approach a situation you are unfamiliar with. You want the interviewer to see that you have critical-thinking skills and can research how to complete an assignment. Still, you also want to show them you are unafraid to ask for clarification so you do not complete the task incorrectly.

"It depends on the assignment. If it is something I believe I can research and figure out how to complete the task, I will go that route. Suppose the job is something particular to the company I am working for, and it involves a specific way to complete it. In that case, I will tell the person giving me the assignment I am unfamiliar with how to do the task. I will ask them to show me or point me in the right direction, so I complete the assignment correctly."