1. What is TensorFlow?
2. How do you test services?
3. Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct order.
4. Given a problem statement, what are the ways to come up with technical solutions to solve it?
5. Can you analyze your overall technical protocols and coding expertise skills?