The practice and final exams should be more theoretical.
Most of the questions portrays the dilemma of an HR manager and they indeed feels like questions an HR manager or someone experienced in the field should be able to answer. You said it yourself that the roles in Data Science , BI, Analytics, ML etc are often confusing. Then how can one with no practical experience answer the best choice of method or professional for a real life problem after watching some slides only. The questions with programming languages and Excel were on point.