CND Network Attacks And Defense Strategies Practice Question
An organization's web application is vulnerable to SQL injection (SQLi). An attacker is using union-based queries to extract database contents. Which defensive technology placed in front of the web application can inspect HTTP parameters and block SQLi signatures dynamically?
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
✓
Deploy a Web Application Firewall (WAF) configured with SQL injection signature rule sets and request anomaly scoring.
A Web Application Firewall (WAF) inspects HTTP/HTTPS traffic specifically at Layer 7, utilizing signature matching, anomaly detection, and parser normalization to block attacks like SQL injection and XSS.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a reverse proxy load balancer with IP hashing persistence algorithms.
Why it's wrong here
Load balancers distribute traffic across servers, providing no protection against SQL injection.
- ✗
Enable Unicast Reverse Path Forwarding (uRPF) on the network edge routing equipment.
Why it's wrong here
uRPF verifies routing paths for IP packets, offering no mitigation for web application SQLi.
- ✓
Deploy a Web Application Firewall (WAF) configured with SQL injection signature rule sets and request anomaly scoring.
Why this is correct
A WAF inspects Layer 7 HTTP requests and blocks SQLi patterns before they reach the backend database.
- ✗
Implement a stateful network firewall configured with Layer 4 packet inspection rules.
Why it's wrong here
Stateful firewalls operate at Layers 3 and 4; they cannot parse application-layer SQL statements.
About these practice questions
This CND question is part of Courseiva's 323-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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 EC-Council exam blueprint
This CND practice question is part of Courseiva's free EC-Council 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 CND exam.