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Python Institute PCAD-31-02 Exam Syllabus Topics:

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

1. Which of the following best describes the use of relational databases in analytics?

A) Cannot enforce schema
B) Suitable for managing tabular structured data
C) Used only for image processing
D) Best for real-time log ingestion

2. Which practices are essential to ensure a fair evaluation of a machine learning model's performance?
(Choose two)

A) Randomizing the test dataset labels
B) Training on the entire dataset including test records
C) Using cross-validation to assess generalizability
D) Splitting data into training and test sets

3. Which technique is considered a primary defense against SQL injection when executing database queries from Python?

A) Using parameterized queries
B) Encrypting the database connection
C) Closing the database cursor after each query
D) Escaping quotes manually in SQL strings

4. Which method allows you to detect and remove rows with duplicate values across all columns in a Pandas DataFrame?

A) DataFrame.remove_duplicates()
B) DataFrame.unique()
C) DataFrame.nunique()
D) DataFrame.drop_duplicates()

5. Which methods can be used to validate data types and structure in a Pandas DataFrame?
(Choose two)

A) df.info()
B) df.dtypes
C) df.memory_usage()
D) df.to_csv()

Solutions: