PT0-002 Attacks and Exploits Practice Question
A tester is performing an SQL injection attack on a login form. The tester inputs a single quote (') and receives a database error. The application returns different responses for true and false conditions. Which type of SQL injection is most likely occurring?
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
✓
Blind SQL injection
Blind SQL injection occurs when no error messages are shown, but the application behaves differently based on true/false conditions. Error-based injection shows database errors. UNION-based requires visible output. Time-based uses delays.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Time-based SQL injection
Why it's wrong here
Time-based uses delays, not different responses.
- ✗
UNION-based SQL injection
Why it's wrong here
UNION-based requires the results to be displayed in the output.
- ✗
Error-based SQL injection
Why it's wrong here
Error-based displays errors directly, not different responses.
- ✓
Blind SQL injection
Why this is correct
Blind SQL injection uses conditional responses to infer information.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PT0-003 practice question is part of Courseiva's free CompTIA 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 PT0-003 exam.