- A
Disable caching for the distribution.
Why wrong: Disabling caching forces all requests to go to the origin.
- B
Enable Lambda@Edge to process requests at edge locations.
Why wrong: Lambda@Edge adds processing but does not reduce origin load.
- C
Decrease the TTL (Time to Live) for the cache behavior.
Why wrong: Lower TTL means more frequent origin requests.
- D
Increase the TTL (Time to Live) for the cache behavior.
Higher TTL allows longer caching, reducing origin requests.
Question 1,347 of 1,616
Increase CloudFront TTL for Static Content
This DVA-C02 practice question tests your understanding of development with aws services. 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 uses Amazon CloudFront to distribute content from an S3 bucket. The content is static and rarely changes. The developer wants to reduce the load on the origin and improve performance for users. Which configuration change would achieve this?
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
✓
Increase the TTL (Time to Live) for the cache behavior.
Increasing the TTL for the cache behavior tells CloudFront edge locations to retain cached copies of the static content for a longer period before re-validating with the origin S3 bucket. This reduces the number of requests that reach the origin, lowering load on the S3 bucket, and improves user performance by serving content directly from the edge cache more frequently.
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.
- ✗
Disable caching for the distribution.
Why it's wrong here
Disabling caching forces all requests to go to the origin.
- ✗
Enable Lambda@Edge to process requests at edge locations.
Why it's wrong here
Lambda@Edge adds processing but does not reduce origin load.
- ✗
Decrease the TTL (Time to Live) for the cache behavior.
Why it's wrong here
Lower TTL means more frequent origin requests.
- ✓
Increase the TTL (Time to Live) for the cache behavior.
Why this is correct
Higher TTL allows longer caching, reducing origin requests.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse decreasing TTL with improving freshness, but for static, rarely changing content, a longer TTL reduces origin load and improves performance, not a shorter one.
Detailed technical explanation
How to think about this question
CloudFront cache behaviors use TTL values (minimum, default, and maximum) defined in seconds, with the default TTL typically set to 86400 seconds (24 hours). For static content that rarely changes, increasing the TTL to a value like 31536000 seconds (1 year) allows CloudFront to serve content from edge caches without re-validating, leveraging HTTP cache-control headers like 'max-age' and 's-maxage' to control freshness. This is especially effective when combined with versioned filenames or cache invalidation strategies to handle updates.
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
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the TTL (Time to Live) for the cache behavior. — Increasing the TTL for the cache behavior tells CloudFront edge locations to retain cached copies of the static content for a longer period before re-validating with the origin S3 bucket. This reduces the number of requests that reach the origin, lowering load on the S3 bucket, and improves user performance by serving content directly from the edge cache more frequently.
What should I do if I get this DVA-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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Last reviewed: Jul 4, 2026
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