This PCEP practice question tests your understanding of data types, variables, basic i/o and operators. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE of the following are Python data types?
str
String is a data type.
math
Why wrong: math is a module, not a data type.
bool
Boolean is a data type.
float
Float is a data type.
None
Why wrong: None is a value, not a data type (it has type NoneType).
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
str
Option A is correct because `str` is a built-in Python data type used to represent sequences of characters, i.e., strings. In Python, strings are immutable and are defined by enclosing text in single, double, or triple quotes.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
str
Why this is correct
String is a data type.
Related concept
Read the scenario before looking for a memorised answer.
math
Why it's wrong here
math is a module, not a data type.
bool
Why this is correct
Boolean is a data type.
Related concept
Read the scenario before looking for a memorised answer.
float
Why this is correct
Float is a data type.
Related concept
Read the scenario before looking for a memorised answer.
None
Why it's wrong here
None is a value, not a data type (it has type NoneType).
Common exam traps
Cisco often tests the distinction between a data type and a module or a value, so candidates may mistakenly select `math` (a module) or `None` (a value) as data types because they appear frequently in Python code.
Detailed technical explanation
Python's core data types include `int`, `float`, `complex`, `str`, `bool`, `list`, `tuple`, `range`, `dict`, `set`, `frozenset`, and `bytes`. The `bool` type is a subclass of `int`, with `True` and `False` behaving as 1 and 0 in arithmetic operations. Understanding the distinction between a data type (like `str`) and a module (like `math`) is crucial for writing correct type-dependent code, such as when using `isinstance()` or type annotations.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PCEP exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Data Types, Variables, Basic I/O and Operators — This question tests Data Types, Variables, Basic I/O and Operators — Read the scenario before looking for a memorised answer..
The correct answer is: str — Option A is correct because `str` is a built-in Python data type used to represent sequences of characters, i.e., strings. In Python, strings are immutable and are defined by enclosing text in single, double, or triple quotes.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This PCEP practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCEP exam.
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