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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:

1. What object-oriented principle allows a child class to reuse and extend the behavior of a parent class in a Python data modeling scenario?

A) Encapsulation
B) Abstraction
C) Composition
D) Inheritance

2. You have a list of product prices, and you need to remove duplicate values while maintaining the fastest performance. Which core data structure should you use?

A) set
B) dictionary
C) list
D) tuple

3. Which method in a Python class is responsible for initializing the object's attributes at the time of creation?

A) __str__()
B) __main__()
C) __getattr__()
D) __init__()

4. Which SQL commands are typically used to retrieve and manipulate data in a data analysis context?
(Choose all that apply)
Response:

A) INSERT
B) ROLLBACK
C) SELECT
D) UPDATE

5. What is the correct SQL statement to permanently remove a table named customers from a database?

A) REMOVE TABLE customers;
B) TRUNCATE TABLE customers;
C) DELETE TABLE customers;
D) DROP TABLE customers;

Solutions: