ITPEC FE Morning April 2019 Question 66

Big Data Utilization Stages — identifying which stage a scenario belongs to

Big data utilization follows four developmental stages:

• •Stage 1 – Confirmation: What happened? (collecting and confirming facts)
• •Stage 2 – Interpretation: Why did it happen? (analyzing causes)
• •Stage 3 – Prediction: What will happen? (forecasting future events)
• •Stage 4 – Development: What should be done? (taking action to improve)

The correct answer is b): operational errors are estimated from big data, and then the UI is improved to reduce errors. This is Stage 4 because it goes beyond analysis — it takes a concrete improvement action based on the data.

Why not the others:
- a) Finding unanticipated errors and their causes from user histories → Stage 1 (confirming facts)
- c) Using simulation to estimate failure rate increase → Stage 3 (predicting future outcomes)
- d) Storing operation histories and clarifying usage rates → Stage 1/2 (collecting and interpreting data)

Key rule: Stage 4 requires an action or improvement — look for verbs like "improved," "developed," or "implemented." If the scenario only finds, estimates, or predicts, it belongs to an earlier stage.

AI-generated — may contain errors