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Updated: Jul 08, 2026
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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:
1. Which technique is considered a primary defense against SQL injection when executing database queries from Python?
A) Escaping quotes manually in SQL strings
B) Closing the database cursor after each query
C) Encrypting the database connection
D) Using parameterized queries
2. Which Python constructs are useful for comparing and managing object identity in a data pipeline?
(Choose all that apply)
A) id() function to retrieve unique object identifiers
B) == operator for checking value equivalence
C) is operator for memory-level comparison
D) str() function to convert data formats
3. What distinguishes structured data from unstructured data in the context of data modeling and storage?
A) Unstructured data contains only numeric values
B) Structured data follows a consistent schema or format
C) Unstructured data cannot be stored or analyzed
D) Structured data cannot be stored in databases
4. Which packages are most commonly used together in a data science workflow for data manipulation and visualization?
(Choose two)
A) pandas
B) NumPy
C) flask
D) Pygame
5. Which method is used after grouping a DataFrame to compute the average value for each group in a specific column?
A) groupby().aggregate()
B) groupby().count()
C) groupby().max()
D) groupby().mean()
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A,C | Question # 3 Answer: B | Question # 4 Answer: A,B | Question # 5 Answer: D |
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