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

1. Which storage system is best suited for storing and retrieving large volumes of unstructured data, such as images or logs?

A) Data cubes
B) Relational databases
C) In-memory databases
D) Object storage systems

2. When working with relational databases in Python, what are key components required to establish and manage database connections?
(Choose all that apply)

A) Connection object to interface with the database
B) Python's random module for generating keys
C) Database driver or module (e.g., sqlite3)
D) Cursor object for executing queries

3. Which characteristics are commonly associated with cloud-based data storage solutions?

A) Requires dedicated local hardware
B) Physical proximity to user machines
C) High availability and redundancy
D) Elastic scalability

4. When joining two tables in a relational database using SQL, which clause is used to specify the relationship between their columns?

A) GROUP BY
B) HAVING
C) FROM
D) JOIN ON

5. Which of the following practices improves clarity when combining visualizations and textual explanations in a report?

A) Repeat all numerical data in both the chart and text
B) Include concise textual summaries that highlight the chart's message
C) Avoid summarizing the data verbally
D) Use visualizations alone without titles or captions

Solutions: