- A
Associate AWS WAF with the ALB and make the ALB internet-facing
ALB supports AWS WAF integration for web traffic inspection.
- B
Use a Network Load Balancer with AWS WAF attached
Why wrong: NLB does not support AWS WAF; WAF works with ALB and CloudFront.
- C
Place the ALB behind a Security Group that inspects traffic
Why wrong: Security Groups are for allow/deny rules, not WAF inspection.
- D
Use Amazon CloudFront in front of the ALB with AWS WAF
Why wrong: While valid, it adds unnecessary complexity; WAF directly on ALB is sufficient.
Question 1,657 of 1,705
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 has a VPC with an Application Load Balancer (ALB) that distributes traffic to EC2 instances in private subnets. The ALB needs to be accessible from the internet. The security team requires that all traffic to the ALB be inspected by AWS WAF. Which configuration meets these requirements?
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
✓
Associate AWS WAF with the ALB and make the ALB internet-facing
AWS WAF can be directly associated with an Application Load Balancer (ALB) to inspect HTTP/HTTPS traffic before it reaches the ALB. Making the ALB internet-facing allows it to receive traffic directly from the internet while WAF provides the required traffic inspection. This combination meets both the accessibility and security requirements without additional components.
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.
- ✓
Associate AWS WAF with the ALB and make the ALB internet-facing
Why this is correct
ALB supports AWS WAF integration for web traffic inspection.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a Network Load Balancer with AWS WAF attached
Why it's wrong here
NLB does not support AWS WAF; WAF works with ALB and CloudFront.
- ✗
Place the ALB behind a Security Group that inspects traffic
Why it's wrong here
Security Groups are for allow/deny rules, not WAF inspection.
- ✗
Use Amazon CloudFront in front of the ALB with AWS WAF
Why it's wrong here
While valid, it adds unnecessary complexity; WAF directly on ALB is sufficient.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think CloudFront is always required for WAF integration, but AWS WAF can be directly associated with an internet-facing ALB without needing CloudFront.
Detailed technical explanation
How to think about this question
AWS WAF integrates with ALB via a web ACL (Access Control List) that evaluates rules against each HTTP/HTTPS request. The ALB must be internet-facing to receive traffic from the internet, and the WAF web ACL is attached to the ALB's listener rule to inspect traffic before it reaches the target group. Under the hood, WAF rules are evaluated in order, and if a request matches a rule (e.g., rate-based or SQL injection), it can be blocked, counted, or allowed before the ALB processes it.
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.
TExam Day Tips
- 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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Associate AWS WAF with the ALB and make the ALB internet-facing — AWS WAF can be directly associated with an Application Load Balancer (ALB) to inspect HTTP/HTTPS traffic before it reaches the ALB. Making the ALB internet-facing allows it to receive traffic directly from the internet while WAF provides the required traffic inspection. This combination meets both the accessibility and security requirements without additional components.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 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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