- A
S3 bucket policy with a condition that restricts access by IP address
Why wrong: An S3 bucket policy with an IP address condition would allow requests from that IP, but requests still require valid AWS credentials (e.g., Signature V4) unless the bucket is made public. This does not provide a simple time-limited link for a user without credentials, and it would open access to all objects from that IP, not just the specific file.
- B
IAM role with cross-account access for the auditor's AWS account
Why wrong: An IAM role with cross-account access requires the auditor to have an AWS account and to assume the role. The auditor does not have an AWS account, so this option does not meet the requirement. Moreover, it would grant access to all resources the role allows, not a single time-limited download.
- C
S3 presigned URL generated with a 48-hour expiration
An S3 presigned URL is the correct solution. It allows the company to generate a URL that provides temporary access to a specific S3 object. The URL includes a signature that expires after the specified time (48 hours). The auditor can simply use the URL to download the file without needing AWS credentials or any other authentication, and the bucket remains private.
- D
CloudFront signed URL using a trusted key group
Why wrong: A CloudFront signed URL can also provide temporary access, but it requires a CloudFront distribution configured for the S3 bucket. The question does not indicate that the company uses CloudFront, and implementing a distribution adds unnecessary complexity. An S3 presigned URL is the simpler, direct feature designed for this exact use case without needing additional services.
CLF-C02 Security and Compliance Practice Question
This CLF-C02 practice question tests your understanding of security and compliance. 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 stores sensitive audit reports in an Amazon S3 bucket. An external auditor needs to download a specific report for a compliance review. The auditor does not have an AWS account and will only need access for 48 hours. The company wants to provide a secure, time-limited link that allows the auditor to download the file directly from S3 without making the bucket public or requiring the auditor to authenticate with AWS. Which AWS feature should the company use to meet 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
S3 presigned URL generated with a 48-hour expiration
An S3 presigned URL allows the company to grant temporary, time-limited access to a specific object in a private S3 bucket without requiring the auditor to have AWS credentials. By generating the URL with a 48-hour expiration, the company meets the exact requirement for secure, time-bound access. The auditor can download the file directly via HTTPS using the presigned URL, which embeds the necessary authentication information.
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.
- ✗
S3 bucket policy with a condition that restricts access by IP address
Why it's wrong here
An S3 bucket policy with an IP address condition would allow requests from that IP, but requests still require valid AWS credentials (e.g., Signature V4) unless the bucket is made public. This does not provide a simple time-limited link for a user without credentials, and it would open access to all objects from that IP, not just the specific file.
When this WOULD be correct
A company needs to allow access to an S3 bucket only from a specific corporate IP range for all users, and the users have AWS credentials (e.g., IAM users) that can be authenticated via the bucket policy.
- ✗
IAM role with cross-account access for the auditor's AWS account
Why it's wrong here
An IAM role with cross-account access requires the auditor to have an AWS account and to assume the role. The auditor does not have an AWS account, so this option does not meet the requirement. Moreover, it would grant access to all resources the role allows, not a single time-limited download.
When this WOULD be correct
A company needs to grant an external partner with their own AWS account temporary access to specific S3 objects. The partner's account must be allowed to assume a role that has permissions to read the objects, and the access should be time-limited via the role's session duration.
- ✓
S3 presigned URL generated with a 48-hour expiration
Why this is correct
An S3 presigned URL is the correct solution. It allows the company to generate a URL that provides temporary access to a specific S3 object. The URL includes a signature that expires after the specified time (48 hours). The auditor can simply use the URL to download the file without needing AWS credentials or any other authentication, and the bucket remains private.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
CloudFront signed URL using a trusted key group
Why it's wrong here
A CloudFront signed URL can also provide temporary access, but it requires a CloudFront distribution configured for the S3 bucket. The question does not indicate that the company uses CloudFront, and implementing a distribution adds unnecessary complexity. An S3 presigned URL is the simpler, direct feature designed for this exact use case without needing additional services.
When this WOULD be correct
A company needs to distribute content globally with low latency and wants to restrict access to specific users using signed URLs or cookies, while also benefiting from CloudFront's caching and DDoS protection. The auditor would access the file via a CloudFront URL, not directly from S3.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓S3 presigned URL generated with a 48-hour expirationCorrect answer▾
Why this is correct
An S3 presigned URL is the correct solution. It allows the company to generate a URL that provides temporary access to a specific S3 object. The URL includes a signature that expires after the specified time (48 hours). The auditor can simply use the URL to download the file without needing AWS credentials or any other authentication, and the bucket remains private.
✗S3 bucket policy with a condition that restricts access by IP addressWrong answer — click to see why▾
Why this is wrong here
The auditor does not have an AWS account, so an S3 bucket policy restricting by IP address would still require the auditor to have AWS credentials to access the bucket, which they lack.
★ When this WOULD be the correct answer
A company needs to allow access to an S3 bucket only from a specific corporate IP range for all users, and the users have AWS credentials (e.g., IAM users) that can be authenticated via the bucket policy.
Why candidates choose this
Candidates may think IP-based restrictions are sufficient for security and overlook that the auditor has no AWS credentials to authenticate, assuming the policy alone grants access.
✗IAM role with cross-account access for the auditor's AWS accountWrong answer — click to see why▾
Why this is wrong here
The auditor does not have an AWS account, so cross-account access via an IAM role is not possible. IAM roles require the external user to have an AWS account to assume the role.
★ When this WOULD be the correct answer
A company needs to grant an external partner with their own AWS account temporary access to specific S3 objects. The partner's account must be allowed to assume a role that has permissions to read the objects, and the access should be time-limited via the role's session duration.
Why candidates choose this
Candidates may think cross-account IAM roles are the standard way to grant external access, overlooking the requirement that the auditor lacks an AWS account.
✗CloudFront signed URL using a trusted key groupWrong answer — click to see why▾
Why this is wrong here
CloudFront signed URLs require the auditor to access the content through CloudFront, not directly from S3, and involve setting up a CloudFront distribution with an origin access identity, which is unnecessary for a simple, time-limited direct S3 download.
★ When this WOULD be the correct answer
A company needs to distribute content globally with low latency and wants to restrict access to specific users using signed URLs or cookies, while also benefiting from CloudFront's caching and DDoS protection. The auditor would access the file via a CloudFront URL, not directly from S3.
Why candidates choose this
Candidates may confuse CloudFront signed URLs with S3 presigned URLs, thinking both provide time-limited access, but they overlook that CloudFront signed URLs require a CloudFront distribution and are not for direct S3 access.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may overcomplicate the solution by choosing CloudFront signed URLs (Option D) because they associate signed URLs with security, but the question explicitly requires a direct S3 download without additional services, making the simpler S3 presigned URL the correct choice.
Detailed technical explanation
How to think about this question
An S3 presigned URL is generated by signing a request with the bucket owner's AWS credentials (using AWS Signature Version 4) and embedding the expiration timestamp. The URL includes query parameters such as X-Amz-Algorithm, X-Amz-Credential, X-Amz-SignedHeaders, and X-Amz-Expires, which together allow the bearer to perform a specific action (e.g., GET) on the object. A subtle behavior is that the maximum expiration for a presigned URL is 7 days (604,800 seconds) when using AWS Signature Version 4, so a 48-hour expiration is well within limits.
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.
- →
Security and Compliance — study guide chapter
Learn the concepts, then practise the questions
- →
Security and Compliance practice questions
Targeted practice on this topic area only
- →
All CLF-C02 questions
1,024 questions across all exam domains
- →
AWS Certified Cloud Practitioner CLF-C02 study guide
Full concept coverage aligned to exam objectives
- →
CLF-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related CLF-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Cloud Concepts practice questions
Practise CLF-C02 questions linked to Cloud Concepts.
Security and Compliance practice questions
Practise CLF-C02 questions linked to Security and Compliance.
Cloud Technology and Services practice questions
Practise CLF-C02 questions linked to Cloud Technology and Services.
Billing, Pricing, and Support practice questions
Practise CLF-C02 questions linked to Billing, Pricing, and Support.
AWS shared responsibility model practice questions
Practise CLF-C02 questions linked to AWS shared responsibility model.
AWS IAM practice questions
Practise CLF-C02 questions linked to AWS IAM.
AWS pricing practice questions
Practise CLF-C02 questions linked to AWS pricing.
AWS support plans practice questions
Practise CLF-C02 questions linked to AWS support plans.
AWS S3 practice questions
Practise CLF-C02 questions linked to AWS S3.
AWS EC2 practice questions
Practise CLF-C02 questions linked to AWS EC2.
Practice this exam
Start a free CLF-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this CLF-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: S3 presigned URL generated with a 48-hour expiration — An S3 presigned URL allows the company to grant temporary, time-limited access to a specific object in a private S3 bucket without requiring the auditor to have AWS credentials. By generating the URL with a 48-hour expiration, the company meets the exact requirement for secure, time-bound access. The auditor can download the file directly via HTTPS using the presigned URL, which embeds the necessary authentication information.
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.
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 →
Keep practising
More CLF-C02 practice questions
- A company publishes a message each time a new product is added to its catalogue. Three services need to receive this mes…
- A media company stores frequently accessed video thumbnails in Amazon S3. The thumbnails are read multiple times every d…
- A company needs a service to translate domain names (like www.example.com) into IP addresses, check the health of their…
- A startup runs an application on AWS and receives a monthly bill that charges exactly for the number of compute hours us…
- A financial institution runs its core banking application on-premises due to regulatory requirements. It has connected i…
- A company wants to run a MySQL database in AWS without managing database software installation, applying patches, settin…
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.