- A
Create one CloudFront behavior for all content. Set a cache policy with a TTL of 30 days. Create a Lambda@Edge function to override the TTL to 1 day for requests with .jpg extension.
Why wrong: This adds unnecessary complexity and operational overhead by introducing Lambda@Edge when CloudFront natively supports different TTLs per behavior. Moreover, the cache policy applies at the behavior level, not per file extension within a single behavior, making this solution error-prone and harder to maintain.
- B
Create two CloudFront behaviors: one for the path pattern /videos/* and one for /thumbnails/*. Associate a cache policy with a TTL of 30 days to the video behavior and a cache policy with a TTL of 1 day to the thumbnail behavior. Both behaviors point to the same S3 origin.
This uses CloudFront's built-in behavior routing with path patterns. Each behavior can have its own cache policy (or TTL settings), allowing different caching durations for videos and thumbnails while using a single distribution and a single S3 bucket. This meets the requirements with minimal operational overhead.
- C
Create two separate CloudFront distributions: one for videos with a cache policy of 30 days, and one for thumbnails with a cache policy of 1 day. Point both to the same S3 bucket.
Why wrong: Managing two separate distributions adds complexity and unnecessary costs. A single distribution with multiple behaviors is designed for exactly this use case. Using two distributions would require managing separate DNS records, SSL certificates, and other configuration.
- D
In the S3 bucket, create two folders: /videos and /thumbnails. Use S3 Cross-Region Replication to replicate thumbnails to a separate bucket in a different Region. Create a single CloudFront behavior with a cache policy of 1 day for the thumbnail bucket and a separate behavior for the original bucket.
Why wrong: Cross-Region Replication is not needed for caching TTL control. This option introduces unnecessary data transfer costs and operational complexity. CloudFront can serve content from a single S3 bucket with different cache policies per behavior, making replication and multiple origins unnecessary.
Quick Answer
The answer is to create two CloudFront behaviors with distinct path patterns and cache policies. This is correct because CloudFront’s multiple cache behaviors allow you to route requests based on URL patterns like /videos/* and /thumbnails/* to the same S3 origin while applying different caching rules—a 30-day TTL for videos and a 1-day TTL for thumbnails—without needing separate distributions or custom code. On the AWS Certified Cloud Practitioner CLF-C02 exam, this scenario tests your understanding of CloudFront’s ability to serve mixed content from a single origin using behaviors, a common real-world optimization. A frequent trap is assuming you need multiple distributions or origins, but CloudFront’s path-based routing handles it with minimal overhead. Memory tip: think “path patterns pair with policies”—the URL path tells CloudFront which cache rule to apply, keeping your origin simple and your TTLs precise.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and 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 media company runs a video-on-demand platform on AWS. Video files (.mp4) and thumbnail images (.jpg) are stored in the same Amazon S3 bucket. The company uses Amazon CloudFront to deliver content to users globally. The video files are large and do not change frequently, so the company wants them to be cached at CloudFront edge locations for 30 days. Thumbnails change more often when new uploads are processed, so the company wants them to be cached for only 1 day. The company wants a single CloudFront distribution to serve both types of content from the same S3 bucket. Which configuration should the company use to meet these requirements with minimal operational overhead?
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
Create two CloudFront behaviors: one for the path pattern /videos/* and one for /thumbnails/*. Associate a cache policy with a TTL of 30 days to the video behavior and a cache policy with a TTL of 1 day to the thumbnail behavior. Both behaviors point to the same S3 origin.
Option B is correct because CloudFront allows multiple behaviors within a single distribution, each with its own path pattern and cache policy. By configuring path patterns /videos/* and /thumbnails/*, the company can apply a 30-day TTL cache policy to video requests and a 1-day TTL cache policy to thumbnail requests, both pointing to the same S3 origin. This meets the caching requirements with minimal operational overhead, as it avoids custom code or multiple distributions.
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.
- ✗
Create one CloudFront behavior for all content. Set a cache policy with a TTL of 30 days. Create a Lambda@Edge function to override the TTL to 1 day for requests with .jpg extension.
Why it's wrong here
This adds unnecessary complexity and operational overhead by introducing Lambda@Edge when CloudFront natively supports different TTLs per behavior. Moreover, the cache policy applies at the behavior level, not per file extension within a single behavior, making this solution error-prone and harder to maintain.
- ✓
Create two CloudFront behaviors: one for the path pattern /videos/* and one for /thumbnails/*. Associate a cache policy with a TTL of 30 days to the video behavior and a cache policy with a TTL of 1 day to the thumbnail behavior. Both behaviors point to the same S3 origin.
Why this is correct
This uses CloudFront's built-in behavior routing with path patterns. Each behavior can have its own cache policy (or TTL settings), allowing different caching durations for videos and thumbnails while using a single distribution and a single S3 bucket. This meets the requirements with minimal operational overhead.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create two separate CloudFront distributions: one for videos with a cache policy of 30 days, and one for thumbnails with a cache policy of 1 day. Point both to the same S3 bucket.
- ✗
In the S3 bucket, create two folders: /videos and /thumbnails. Use S3 Cross-Region Replication to replicate thumbnails to a separate bucket in a different Region. Create a single CloudFront behavior with a cache policy of 1 day for the thumbnail bucket and a separate behavior for the original bucket.
Why it's wrong here
Cross-Region Replication is not needed for caching TTL control. This option introduces unnecessary data transfer costs and operational complexity. CloudFront can serve content from a single S3 bucket with different cache policies per behavior, making replication and multiple origins unnecessary.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think Lambda@Edge or multiple distributions are necessary to apply different TTLs to different file types from the same origin, but CloudFront’s multiple behaviors with path patterns and cache policies provide a simpler, native solution.
Detailed technical explanation
How to think about this question
CloudFront behaviors are evaluated based on path pattern precedence, with more specific patterns (e.g., /videos/*) taking priority over the default catch-all pattern. Cache policies define TTL values (minimum, default, and maximum) that control how long objects are cached at edge locations; the Origin Cache-Control headers can override these if configured, but using distinct cache policies per behavior ensures consistent TTLs without relying on origin headers. In practice, this approach is commonly used for media platforms where different file types (e.g., videos vs. thumbnails) have different update frequencies, allowing efficient caching without custom logic.
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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create two CloudFront behaviors: one for the path pattern /videos/* and one for /thumbnails/*. Associate a cache policy with a TTL of 30 days to the video behavior and a cache policy with a TTL of 1 day to the thumbnail behavior. Both behaviors point to the same S3 origin. — Option B is correct because CloudFront allows multiple behaviors within a single distribution, each with its own path pattern and cache policy. By configuring path patterns /videos/* and /thumbnails/*, the company can apply a 30-day TTL cache policy to video requests and a 1-day TTL cache policy to thumbnail requests, both pointing to the same S3 origin. This meets the caching requirements with minimal operational overhead, as it avoids custom code or multiple distributions.
What should I do if I get this CLF-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: Jun 11, 2026
This CLF-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 CLF-C02 exam.
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