Online Access Free PCED-30-02 Exam Questions

A dictionary is defined as d = {"a":1, "b":2}. The programmer accesses d["c"]. What happens when this line executes?

• A.Returns None
• B.Returns 0
• C.Adds key automatically
• D.Raises KeyError

An e-commerce site records every product view and purchase.
Which of the following best describes how these logs become marketing insights?

• A.Raw event logs are stored, archived, and indexed - like by user ID and session - which then facilitate audit trails.
• B.Raw event logs are structured, analyzed, and interpreted into information - like conversion rates by product - which then builds knowledge of customer preferences.
• C.Raw event logs are validated, organized, and compiled into datasets - like timestamped user actions - which then support system debugging.
• D.Raw event logs are filtered, aggregated, and formatted into summaries - like total visits per category - which then provide traffic reports.

A Python loop uses range(5, 0, -2) to iterate backward. The programmer expects a decreasing sequence. Which values will actually be generated when this loop runs?

• A.5, 3
• B.5, 3, 1
• C.4, 2, 0
• D.5, 4, 3, 2, 1

Given the following string:
text = "Report2024Final"
Which of the following statements are entirely correct? (Choose two.)

• A.text.capitalize()changes Report2024Finalto REPORT2024FINAL, and text.find("2024")returns 6
• B.text[6:8].isdigit()returns True, and text.endswith("Final")returns True
• C.text.capitalize()changes Finalto lowercase, and text.find ("L")returns True
• D.text.isalpha()returns True, and text.find ("2024")returns True
• E.text[-6].isdigit() returns True, text.startswith("r") returns True
• F.text[0:6].isalpha() returns True, and text.find("2024") returns 6

Which task is traditionally or typically performed by a data analyst, and not by a data scientist or analytics specialist? Select the best answer.

• A.Creating summary tables and charts to describe patterns in historical data.
• B.Designing a data pipeline to ingest and process real-time sensor data.
• C.Developing machine learning algorithms to predict user behavior.
• D.Recommending pricing strategies using predictive modeling and A/B testing.