Your question is Black-Box vs White-Box Testing. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Can you explain the differences between black-box and white-box testing?
Describe what information the tester uses in each approach, how test cases are designed, and when each approach is useful. Include one concrete example and clarify whether the techniques are limited to a particular testing level.
Keep the answer focused on core testing concepts and practical QA usage.