The answer is reduced latency for users by caching content at edge locations and automatic DDoS protection via AWS Shield Standard. CloudFront caches static and dynamic content at its globally distributed edge locations, serving requests from the closest point to the user and significantly lowering latency, while also offloading traffic from the ALB. Additionally, AWS Shield Standard is automatically enabled on CloudFront, absorbing common Layer 3/4 volumetric DDoS attacks at the edge before they ever reach the ALB, which lacks built-in DDoS mitigation beyond basic security groups. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this concept tests your understanding of how CloudFront acts as a reverse proxy and security buffer, often appearing in scenario-based questions where you must identify which two benefits apply. A common trap is confusing ALB’s native features with CloudFront’s edge protection—remember that ALBs alone do not shield against DDoS. Memory tip: “Cache and Shield” — CloudFront caches content and shields your ALB.
SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. 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.
Which TWO of the following are benefits of using Amazon CloudFront in front of an Application Load Balancer? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Protect the application against DDoS attacks
Amazon CloudFront provides AWS Shield Standard automatically, which mitigates common Layer 3/4 DDoS attacks at the edge before traffic reaches the ALB. By absorbing volumetric attacks at CloudFront's globally distributed edge locations, the ALB is shielded from malicious traffic, ensuring application availability. This is a key benefit because ALBs alone do not have built-in DDoS protection beyond basic security group rules.
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.
✗
Simplify VPC endpoint configuration
Why it's wrong here
CloudFront does not simplify VPC endpoint configuration; it is separate.
✓
Protect the application against DDoS attacks
Why this is correct
CloudFront integrates with AWS Shield for DDoS protection.
Related concept
Read the scenario before looking for a memorised answer.
✗
Offload SSL/TLS termination from the ALB
Why it's wrong here
SSL termination is typically done at the ALB, not offloaded to CloudFront.
✓
Reduced latency for users by caching content at edge locations
Why this is correct
CloudFront caches content at edge locations, reducing latency for end users.
Related concept
Read the scenario before looking for a memorised answer.
✗
Provide a static IP address for the application
Why it's wrong here
CloudFront does not provide static IP addresses; it uses a global network of IPs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often select 'Offload SSL/TLS termination from the ALB' (Option C) thinking it is a benefit of using CloudFront in front of an ALB, but this is a general CloudFront feature that applies to any origin, not a specific advantage of the ALB combination, and the ALB can already handle SSL/TLS termination efficiently.
Detailed technical explanation
How to think about this question
CloudFront integrates with AWS WAF and AWS Shield Advanced for enhanced DDoS mitigation, allowing you to apply rate-based rules and IP reputation lists at the edge. For caching, CloudFront can cache both static and dynamic content (e.g., API responses) using cache behaviors and TTL settings, reducing load on the ALB and improving latency for users globally. Under the hood, CloudFront uses a pull-through model where it fetches content from the ALB origin only when a cache miss occurs, significantly reducing origin requests.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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.
Networking and Content Delivery — This question tests Networking and Content Delivery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Protect the application against DDoS attacks — Amazon CloudFront provides AWS Shield Standard automatically, which mitigates common Layer 3/4 DDoS attacks at the edge before traffic reaches the ALB. By absorbing volumetric attacks at CloudFront's globally distributed edge locations, the ALB is shielded from malicious traffic, ensuring application availability. This is a key benefit because ALBs alone do not have built-in DDoS protection beyond basic security group rules.
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.
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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.
Question Discussion
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