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

1. Which practices help maintain data integrity across large datasets in Pandas workflows?
(Choose two)

A) Defining and enforcing schema constraints
B) Sorting columns alphabetically
C) Automatically converting all text to uppercase
D) Using assertions to enforce domain-specific rules

2. Which practices are typically part of the data integration process?
(Choose two)

A) Format standardization
B) Data encryption
C) Schema alignment
D) Neural network training

3. Which Python library is most commonly used to establish a connection to a SQLite database and perform SQL operations?

A) psycopg2
B) pymysql
C) sqlite3
D) sqlalchemy

4. 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) Using parameterized queries
D) Encrypting the database connection

5. Which operations are valid when working with Pandas Series?
(Choose two)

A) Using .columns to rename
B) Merging by index using merge()
C) Applying NumPy universal functions
D) Arithmetic vector operations

Solutions: