200-901 Application Deployment and Security Practice Question
A developer is writing a web application and needs to prevent SQL injection attacks. Which coding practice is most effective?
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
✓
Use parameterized queries with prepared statements
Parameterized queries separate SQL logic from data, preventing attackers from injecting malicious SQL. Input validation is also important but not a direct prevention of SQL injection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Validate input with regex to allow only alphanumeric characters
Why it's wrong here
Incorrect. Validation helps but is not sufficient; parameterized queries are the standard defense.
- ✓
Use parameterized queries with prepared statements
Why this is correct
Correct. Parameterized queries prevent SQL injection by treating input as data, not code.
- ✗
Use stored procedures exclusively
Why it's wrong here
Incorrect. Stored procedures can still be vulnerable if they concatenate input.
- ✗
Escape all user input with htmlspecialchars
Why it's wrong here
Incorrect. That prevents XSS, not SQL injection.
Go deeper
Related to this question
About these practice questions
One of 989 original 200-901 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.