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Python Institute PCAD-31-02 Dumps [2026]–Everything You Need to Know PCAD-31-02 Exam Questions

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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q65-Q70):

NEW QUESTION # 65
What is one potential risk of dynamically constructing SQL queries using string concatenation in Python scripts?

A. Increased memory usage
B. Slower database performance
C. Exposure to SQL injection attacks
D. Missing foreign key constraints

Answer: C

NEW QUESTION # 66
Which command should a data analyst use to install the pandas library in a Python environment using the Python Package Index?

A. install pip pandas
B. python install pandas
C. pip install pandas
D. python get pandas

Answer: C

NEW QUESTION # 67
Which Python library is most commonly used to establish a connection to a SQLite database and perform SQL operations?

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

Answer: C

NEW QUESTION # 68
Which of the following would best validate the uniqueness of a primary key in a Pandas DataFrame?

A. df['id'].isnull().sum()
B. df['id'].nunique()
C. df['id'].duplicated().any()
D. df['id'].fillna()

Answer: C

NEW QUESTION # 69
What is a key assumption of linear regression that distinguishes it from logistic regression?

A. Predictors must be independent
B. Output values must be binary
C. The target variable is unordered categorical
D. The relationship between predictors and the outcome is linear

Answer: D

NEW QUESTION # 70
......

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