- A
Store content in an S3 bucket and use Amazon CloudFront with S3 as origin
CloudFront provides global edge caching for low latency, and invalidations allow immediate content updates.
- B
Store content on an EC2 instance behind an Application Load Balancer and use CloudFront
Why wrong: This adds unnecessary complexity and cost; S3 is sufficient for static content.
- C
Store content in Amazon ElastiCache for Redis and use CloudFront
Why wrong: ElastiCache is a caching layer, not designed for storing and serving static files.
- D
Store content in an S3 bucket and use S3 Transfer Acceleration
Why wrong: S3 alone does not provide global low latency; Transfer Acceleration speeds up uploads, not downloads.
Question 166 of 1,746
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. 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 is designing a new web application that will serve static content (HTML, CSS, JS, images) to users globally. The application must have low latency and high availability. Content changes infrequently, but when updated, the changes must be reflected immediately. Which solution should the architect recommend?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"immediately / without restart"Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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
✓
Store content in an S3 bucket and use Amazon CloudFront with S3 as origin
Amazon CloudFront, with an S3 bucket as the origin, provides a global content delivery network (CDN) that caches static content at edge locations, significantly reducing latency for users worldwide. S3 offers durable, highly available storage, and CloudFront’s cache invalidation or versioned object updates allow changes to be reflected immediately when content is updated. This combination meets the requirements for low latency, high availability, and immediate content refresh.
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.
- ✓
Store content in an S3 bucket and use Amazon CloudFront with S3 as origin
Why this is correct
CloudFront provides global edge caching for low latency, and invalidations allow immediate content updates.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Store content on an EC2 instance behind an Application Load Balancer and use CloudFront
Why it's wrong here
This adds unnecessary complexity and cost; S3 is sufficient for static content.
- ✗
Store content in Amazon ElastiCache for Redis and use CloudFront
Why it's wrong here
ElastiCache is a caching layer, not designed for storing and serving static files.
- ✗
Store content in an S3 bucket and use S3 Transfer Acceleration
Why it's wrong here
S3 alone does not provide global low latency; Transfer Acceleration speeds up uploads, not downloads.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may over-engineer the solution by choosing EC2 or ElastiCache, mistakenly thinking they need compute or caching layers for static content, when S3 + CloudFront is the simplest, most cost-effective, and fully managed solution for global static content delivery.
Detailed technical explanation
How to think about this question
CloudFront uses a global network of edge locations that cache objects based on TTL headers (e.g., Cache-Control max-age) or default cache behavior; when content changes, you can use CloudFront’s CreateInvalidation API to immediately purge cached objects, or use versioned object keys (e.g., app-v2.js) to bypass cache without invalidation. S3 as an origin supports origin shield to reduce load on the bucket and improve cache hit ratios, and integrates seamlessly with CloudFront via OAI (Origin Access Identity) for secure, private content delivery. In a real-world scenario, a company updating a global marketing site can invalidate only the changed paths (e.g., /css/main.css) to avoid full-site invalidation costs while ensuring instant propagation.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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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Design for New Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Store content in an S3 bucket and use Amazon CloudFront with S3 as origin — Amazon CloudFront, with an S3 bucket as the origin, provides a global content delivery network (CDN) that caches static content at edge locations, significantly reducing latency for users worldwide. S3 offers durable, highly available storage, and CloudFront’s cache invalidation or versioned object updates allow changes to be reflected immediately when content is updated. This combination meets the requirements for low latency, high availability, and immediate content refresh.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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
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