- A
Create an IAM role for each partner and attach a policy that grants access to specific objects.
Why wrong: IAM roles require AWS credentials and are not suitable for external partners.
- B
Generate presigned URLs using the AWS SDK, specifying the exact object key and expiration time.
Presigned URLs grant access only to the specified object and expire after the set time.
- C
Use a bucket policy that allows access only from the partner's IP address range.
Why wrong: IP-based policies grant access to all objects, not specific ones.
- D
Use CloudFront signed URLs with a custom policy that restricts access to specific objects.
Why wrong: CloudFront signed URLs also work but require CloudFront distribution setup; presigned URLs are simpler.
Question 1,315 of 1,786
DEA-C01 Data Store Management Practice Question
This DEA-C01 practice question tests your understanding of data store management. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 S3 to store large datasets. The data engineering team needs to provide access to specific objects in the bucket to external partners using presigned URLs. Each URL should expire after 12 hours. The team wants to ensure that the presigned URLs cannot be used to access other objects in the bucket. Which approach should be taken?
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
✓
Generate presigned URLs using the AWS SDK, specifying the exact object key and expiration time.
Option B is correct because presigned URLs generated via the AWS SDK allow you to specify the exact object key and expiration time, ensuring that the URL grants access only to that specific object for the defined 12-hour period. This approach uses the secret key of the IAM user or role to sign the URL, and the signature is tied to the object key, so the URL cannot be reused to access other objects in the bucket.
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 an IAM role for each partner and attach a policy that grants access to specific objects.
Why it's wrong here
IAM roles require AWS credentials and are not suitable for external partners.
- ✓
Generate presigned URLs using the AWS SDK, specifying the exact object key and expiration time.
Why this is correct
Presigned URLs grant access only to the specified object and expire after the set time.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a bucket policy that allows access only from the partner's IP address range.
Why it's wrong here
IP-based policies grant access to all objects, not specific ones.
- ✗
Use CloudFront signed URLs with a custom policy that restricts access to specific objects.
Why it's wrong here
CloudFront signed URLs also work but require CloudFront distribution setup; presigned URLs are simpler.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The DEA-C01 exam often tests the distinction between presigned URLs (which are tied to a specific object key and expiration) and bucket policies or IAM roles (which grant broader access), leading candidates to overcomplicate the solution with CloudFront or IP-based restrictions when a simple SDK-generated presigned URL is sufficient.
Detailed technical explanation
How to think about this question
Presigned URLs work by embedding a signature computed using the AWS Signature Version 4 process, which includes the object key, expiration timestamp, and the secret access key of the signing identity. The signature is valid only for the exact object key and expiration, and any attempt to modify the URL (e.g., changing the object key) will cause the signature to mismatch and the request to be denied. In practice, the expiration time is set in seconds (e.g., 43200 seconds for 12 hours), and the URL includes query parameters like X-Amz-Expires and X-Amz-Signature.
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.
- →
Data Store Management — study guide chapter
Learn the concepts, then practise the questions
- →
Data Store Management practice questions
Targeted practice on this topic area only
- →
All DEA-C01 questions
1,786 questions across all exam domains
- →
AWS Certified Data Engineer Associate DEA-C01 study guide
Full concept coverage aligned to exam objectives
- →
DEA-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DEA-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Data Ingestion and Transformation practice questions
Practise DEA-C01 questions linked to Data Ingestion and Transformation.
Data Operations and Support practice questions
Practise DEA-C01 questions linked to Data Operations and Support.
Data Security and Governance practice questions
Practise DEA-C01 questions linked to Data Security and Governance.
Data Store Management practice questions
Practise DEA-C01 questions linked to Data Store Management.
DEA-C01 fundamentals practice questions
Practise DEA-C01 questions linked to DEA-C01 fundamentals.
DEA-C01 scenario practice questions
Practise DEA-C01 questions linked to DEA-C01 scenario.
DEA-C01 troubleshooting practice questions
Practise DEA-C01 questions linked to DEA-C01 troubleshooting.
Practice this exam
Start a free DEA-C01 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 DEA-C01 question test?
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Generate presigned URLs using the AWS SDK, specifying the exact object key and expiration time. — Option B is correct because presigned URLs generated via the AWS SDK allow you to specify the exact object key and expiration time, ensuring that the URL grants access only to that specific object for the defined 12-hour period. This approach uses the secret key of the IAM user or role to sign the URL, and the signature is tied to the object key, so the URL cannot be reused to access other objects in the bucket.
What should I do if I get this DEA-C01 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 DEA-C01 practice questions
- A data pipeline uses Kinesis Data Firehose to deliver streaming data to an S3 bucket. The data volume spikes occasionall…
- An e-commerce company uses AWS Glue to run ETL jobs that transform clickstream data from Amazon S3. The job reads Parque…
- A data engineering team uses Amazon Kinesis Data Analytics for Apache Flink to process streaming data. They notice that…
- A company uses AWS Glue to process streaming data from Amazon Kinesis Data Streams. The job reads JSON records and write…
- A data engineer applies the above bucket policy to an S3 bucket containing sensitive data. The goal is to allow only enc…
- A company uses AWS Glue to catalog data in Amazon S3. The security team requires that all sensitive data be identified a…
Last reviewed: Jul 4, 2026
This DEA-C01 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 DEA-C01 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.