- A
AWS WAF
AWS WAF offers both geo-match conditions to block requests from specific countries and rate-based rules to limit request rates from an IP address. It integrates directly with ALB and provides a single, centrally managed solution.
- B
Amazon CloudFront geo restriction
Why wrong: CloudFront geo restriction (whitelist/blacklist) can block requests from specific countries, but it only works when CloudFront is in front of the ALB. Additionally, it does not provide rate limiting. It is not directly applicable to an ALB alone.
- C
AWS Shield Advanced
Why wrong: AWS Shield Advanced provides network and transport layer DDoS protection and cost protection. It does not offer application-layer filtering such as geo-blocking or rate limiting based on application-level attributes.
- D
Security Groups
Why wrong: Security Groups act as a virtual firewall for EC2 instances, controlling traffic at the instance level based on IP addresses and protocols. They cannot inspect application layer details like geographic location or rate of requests.
SOA-C02 Security and Compliance Practice Question
This SOA-C02 practice question tests your understanding of security and compliance. 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 operates a web application behind an Application Load Balancer (ALB). The SysOps administrator needs to block incoming requests from specific geographic locations (countries X and Y) and also enforce a rate limit of 100 requests per IP address per 5-minute window to mitigate DDoS attacks. The solution must be centrally configured and apply to all requests handled by the ALB. Which AWS service should be used to implement 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
AWS WAF
AWS WAF is the correct service because it provides both geographic (geo-match) blocking and rate-based rules that can be associated directly with an Application Load Balancer. Geo-match conditions allow you to block requests from specific countries (X and Y), while rate-based rules can limit requests to 100 per 5-minute window per source IP. This solution is centrally configured at the ALB level, applying to all incoming requests without requiring additional infrastructure.
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
AWS WAF offers both geo-match conditions to block requests from specific countries and rate-based rules to limit request rates from an IP address. It integrates directly with ALB and provides a single, centrally managed solution.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon CloudFront geo restriction
Why it's wrong here
CloudFront geo restriction (whitelist/blacklist) can block requests from specific countries, but it only works when CloudFront is in front of the ALB. Additionally, it does not provide rate limiting. It is not directly applicable to an ALB alone.
- ✗
AWS Shield Advanced
Why it's wrong here
AWS Shield Advanced provides network and transport layer DDoS protection and cost protection. It does not offer application-layer filtering such as geo-blocking or rate limiting based on application-level attributes.
- ✗
Security Groups
Why it's wrong here
Security Groups act as a virtual firewall for EC2 instances, controlling traffic at the instance level based on IP addresses and protocols. They cannot inspect application layer details like geographic location or rate of requests.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS WAF with CloudFront geo restriction or AWS Shield Advanced, not realizing that only WAF provides both geo-blocking and rate-based rules that can be directly associated with an ALB without requiring CloudFront.
Detailed technical explanation
How to think about this question
AWS WAF rate-based rules use a token bucket algorithm where each source IP is tracked over a sliding window; if the request count exceeds the threshold (e.g., 100 per 300 seconds), subsequent requests are blocked until the window resets. Geo-match conditions rely on MaxMind GeoIP databases to map source IPs to countries, which can be combined with other WAF rules using logical AND/OR statements. When attached to an ALB, WAF rules are evaluated before the request reaches the target group, ensuring minimal latency for legitimate traffic.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Security and Compliance — study guide chapter
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
Security and Compliance — This question tests Security and Compliance — 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 is the correct service because it provides both geographic (geo-match) blocking and rate-based rules that can be associated directly with an Application Load Balancer. Geo-match conditions allow you to block requests from specific countries (X and Y), while rate-based rules can limit requests to 100 per 5-minute window per source IP. This solution is centrally configured at the ALB level, applying to all incoming requests without requiring additional infrastructure.
What should I do if I get this SOA-C02 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
This SOA-C02 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 SOA-C02 exam.
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