PCPP1 Library Modules Practice Question
When executing a SQL query with parameters in sqlite3, why should you use placeholders (e.g., ?) rather than f-strings?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It prevents SQL injection vulnerabilities.
Using placeholders prevents SQL injection attacks and allows the library to handle type conversions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It is required for SELECT queries only.
Why it's wrong here
It is recommended for all query types.
- ✗
It enables automatic commit behavior.
Why it's wrong here
Placeholders do not affect transaction management.
- ✗
It is faster to execute.
Why it's wrong here
Performance is not the primary reason.
- ✓
It prevents SQL injection vulnerabilities.
Why this is correct
Placeholders ensure that input is treated as data, not executable code.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP1 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 PCPP1 exam.