- A
Enable CloudTrail data events for the S3 bucket.
S3 data events record object-level API activity such as GetObject, PutObject, and DeleteObject, along with the IAM principal or role session that made the call. That visibility is required to determine exactly who downloaded which object and when.
- B
Include CloudTrail management events for KMS API calls on the customer managed key.
KMS Decrypt and related key operations are logged as management events in CloudTrail. Enabling those events makes it possible to correlate object reads with key usage and confirm whether the ciphertext was actually decrypted during the suspected exfiltration window.
- C
Enable S3 Object Lock in compliance mode.
Why wrong: Object Lock protects objects from deletion or overwrite, which is useful for retention and immutability, but it does not provide audit visibility into who downloaded the files. It is a preventive and retention control, not the detective control requested here.
- D
Turn on default bucket encryption with SSE-KMS.
Why wrong: Default encryption ensures new objects are stored encrypted at rest, but it does not create an audit trail for object downloads or KMS Decrypt activity. The question asks for investigative visibility, not just encryption configuration.
- E
Enable MFA Delete on the bucket.
Why wrong: MFA Delete helps prevent deletion of versions, but it does not log object read activity or KMS API usage. It is unrelated to determining who accessed the data during the incident.
Quick Answer
The answer is to enable CloudTrail data events for the S3 bucket and include CloudTrail management events for KMS API calls on the customer managed key. CloudTrail data events capture object-level operations like GetObject, which directly logs every download request along with the IAM principal, source IP, and timestamp, making it the only way to detect S3 data exfiltration at the object level. Meanwhile, KMS Decrypt calls are management events, so enabling management events on the customer managed key records every decryption request, allowing you to correlate which principals called KMS Decrypt during the same window. On the SAA-C03 exam, this tests your understanding of CloudTrail’s two event types: data events for S3 object access and management events for KMS key usage. A common trap is assuming default CloudTrail trails log all actions, but they only log management events by default—you must explicitly enable data events for S3. Memory tip: “Data for downloads, Management for keys.”
SAA-C03 Design Secure Architectures Practice Question
This SAA-C03 practice question tests your understanding of design secure architectures. 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.
Security responders suspect exfiltration from an Amazon S3 bucket that stores sensitive reports encrypted with a customer managed KMS key. They need to identify which IAM principal downloaded each object and whether any principals called KMS Decrypt on the key during the same time window. Which two detective controls should be enabled? Select two.
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
Enable CloudTrail data events for the S3 bucket.
Option A is correct because enabling CloudTrail data events for the S3 bucket captures detailed logs of object-level operations, including GetObject (download) requests. This allows you to identify which IAM principal downloaded each object, including the source IP, user agent, and request time. Without data events, CloudTrail only logs management-level actions (e.g., bucket creation) and misses object-level access.
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.
- ✓
Enable CloudTrail data events for the S3 bucket.
Why this is correct
S3 data events record object-level API activity such as GetObject, PutObject, and DeleteObject, along with the IAM principal or role session that made the call. That visibility is required to determine exactly who downloaded which object and when.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Include CloudTrail management events for KMS API calls on the customer managed key.
Why this is correct
KMS Decrypt and related key operations are logged as management events in CloudTrail. Enabling those events makes it possible to correlate object reads with key usage and confirm whether the ciphertext was actually decrypted during the suspected exfiltration window.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable S3 Object Lock in compliance mode.
Why it's wrong here
Object Lock protects objects from deletion or overwrite, which is useful for retention and immutability, but it does not provide audit visibility into who downloaded the files. It is a preventive and retention control, not the detective control requested here.
- ✗
Turn on default bucket encryption with SSE-KMS.
Why it's wrong here
Default encryption ensures new objects are stored encrypted at rest, but it does not create an audit trail for object downloads or KMS Decrypt activity. The question asks for investigative visibility, not just encryption configuration.
- ✗
Enable MFA Delete on the bucket.
Why it's wrong here
MFA Delete helps prevent deletion of versions, but it does not log object read activity or KMS API usage. It is unrelated to determining who accessed the data during the incident.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think CloudTrail management events cover all KMS activity, but KMS Decrypt on a customer managed key is indeed a management event, while S3 object downloads require data events; confusing these two event types leads to missing the correct pairing.
Detailed technical explanation
How to think about this question
CloudTrail data events for S3 capture GetObject, PutObject, and DeleteObject operations at the object level, recording the IAM principal ARN, source IP, and request parameters. For KMS, management events include Decrypt calls on customer managed keys, but note that S3 can use KMS via the S3 service principal, so the actual IAM principal making the request is logged in the S3 data event, not the KMS event. In a real-world scenario, correlating S3 data events (GetObject) with KMS management events (Decrypt) within the same time window reveals whether the downloader also triggered decryption, which is critical for detecting unauthorized exfiltration.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Design Secure Architectures — study guide chapter
Learn the concepts, then practise the questions
- →
Design Secure Architectures practice questions
Targeted practice on this topic area only
- →
All SAA-C03 questions
1,040 questions across all exam domains
- →
SAA-C03 study guide
Full concept coverage aligned to exam objectives
- →
SAA-C03 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SAA-C03 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design Secure Architectures practice questions
Practise SAA-C03 questions linked to Design Secure Architectures.
Design Resilient Architectures practice questions
Practise SAA-C03 questions linked to Design Resilient Architectures.
Design High-Performing Architectures practice questions
Practise SAA-C03 questions linked to Design High-Performing Architectures.
Design Cost-Optimized Architectures practice questions
Practise SAA-C03 questions linked to Design Cost-Optimized Architectures.
SAA-C03 VPC practice questions
Practise SAA-C03 questions linked to SAA-C03 VPC.
SAA-C03 S3 lifecycle policy questions
Practise SAA-C03 questions linked to SAA-C03 S3 lifecycle policy questions.
SAA-C03 RDS Multi-AZ questions
Practise SAA-C03 questions linked to SAA-C03 RDS Multi-AZ questions.
SAA-C03 IAM policy practice questions
Practise SAA-C03 questions linked to SAA-C03 IAM policy.
SAA-C03 Route 53 failover questions
Practise SAA-C03 questions linked to SAA-C03 Route 53 failover questions.
SAA-C03 CloudFront practice questions
Practise SAA-C03 questions linked to SAA-C03 CloudFront.
SAA-C03 NAT gateway questions
Practise SAA-C03 questions linked to SAA-C03 NAT gateway questions.
SAA-C03 VPC endpoint questions
Practise SAA-C03 questions linked to SAA-C03 VPC endpoint questions.
Practice this exam
Start a free SAA-C03 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 SAA-C03 question test?
Design Secure Architectures — This question tests Design Secure Architectures — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable CloudTrail data events for the S3 bucket. — Option A is correct because enabling CloudTrail data events for the S3 bucket captures detailed logs of object-level operations, including GetObject (download) requests. This allows you to identify which IAM principal downloaded each object, including the source IP, user agent, and request time. Without data events, CloudTrail only logs management-level actions (e.g., bucket creation) and misses object-level access.
What should I do if I get this SAA-C03 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 SAA-C03 practice questions
- A content publishing system uses Lambda functions that call an unreliable third-party API. Failed events must be retaine…
- A startup runs two EC2-based workloads in the same AWS Region. Its customer-facing API is always on, and its nightly vid…
- A warehouse integration service must use shared file storage across Linux EC2 instances in multiple Availability Zones.…
- A team runs a stateless web app on Amazon EC2 behind an Application Load Balancer. During traffic spikes, new EC2 instan…
- A service in private subnets downloads product images from Amazon S3 and stores job state in DynamoDB. A NAT Gateway is…
- A static site is hosted in Amazon S3 and delivered by CloudFront. After a frontend release, the same JavaScript bundles…
Last reviewed: Jun 11, 2026
This SAA-C03 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 SAA-C03 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.