- A
AWS WAF
WAF helps protect against SQL injection, XSS, and other web exploits.
- B
Amazon Route 53
Why wrong: Route 53 is a DNS service, not a security service.
- C
AWS Shield
Shield provides DDoS protection, complementing WAF.
- D
Amazon CloudFront
Why wrong: CloudFront is a CDN; it can integrate with WAF but is not required for protection against SQL injection and XSS.
- E
Application Load Balancer (ALB)
ALB can be associated with WAF to inspect traffic before reaching EC2.
Question 1,416 of 1,705
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A company wants to protect its web application running on Amazon EC2 behind an Application Load Balancer (ALB) from common web exploits like SQL injection and cross-site scripting (XSS). Which THREE AWS services should be used together to provide comprehensive protection?
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
✓
AWS WAF
AWS WAF (Option A) protects against web exploits like SQL injection and XSS. AWS Shield (Option C) provides DDoS protection. The Application Load Balancer (Option E) is the target for the web application and can be integrated with WAF and Shield for comprehensive protection. Amazon Route 53 (Option B) is a DNS service and does not directly provide security against web exploits. Amazon CloudFront (Option D) is a CDN that can be used with WAF, but it is not required since the ALB is already in place; the question asks for three services that together provide comprehensive protection, and the combination of WAF, Shield, and ALB covers web application firewall, DDoS protection, and traffic distribution.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
AWS WAF
Why this is correct
WAF helps protect against SQL injection, XSS, and other web exploits.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon Route 53
Why it's wrong here
Route 53 is a DNS service, not a security service.
- ✓
AWS Shield
Why this is correct
Shield provides DDoS protection, complementing WAF.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon CloudFront
Why it's wrong here
CloudFront is a CDN; it can integrate with WAF but is not required for protection against SQL injection and XSS.
- ✓
Application Load Balancer (ALB)
Why this is correct
ALB can be associated with WAF to inspect traffic before reaching EC2.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS WAF — AWS WAF (Option A) protects against web exploits like SQL injection and XSS. AWS Shield (Option C) provides DDoS protection. The Application Load Balancer (Option E) is the target for the web application and can be integrated with WAF and Shield for comprehensive protection. Amazon Route 53 (Option B) is a DNS service and does not directly provide security against web exploits. Amazon CloudFront (Option D) is a CDN that can be used with WAF, but it is not required since the ALB is already in place; the question asks for three services that together provide comprehensive protection, and the combination of WAF, Shield, and ALB covers web application firewall, DDoS protection, and traffic distribution.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 20, 2026
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services 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 ANS-C01 exam.
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