Depends on your interviewer and position applied. Different friends of mine were met with questions of varying difficulty levels.
A friend had purely technical interview. Mine was a mixed between technical and behavioral questions and the behavioral questions were tough to answer.
Key point is interviewers are good at probing therefore give examples of what only you know clearly and nothing else thats vague in your mind.
Number of years experience?
What i know?
In which area or work scope i'm expert?