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Data Security and Governance →easyMultiple ChoiceObjective-mapped

DEA-C01 Data Security and Governance Practice Question

This DEA-C01 practice question tests your understanding of data security and governance. 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.

Exhibit

Refer to the exhibit.

AWS CloudTrail log entry:
```
{
  "eventVersion": "1.08",
  "userIdentity": {
    "arn": "arn:aws:iam::123456789012:user/DataEngineer",
    "principalId": "AIDACKCEVSQ6C2EXAMPLE"
  },
  "eventTime": "2023-09-15T14:30:00Z",
  "eventSource": "s3.amazonaws.com",
  "eventName": "PutObject",
  "awsRegion": "us-east-1",
  "sourceIPAddress": "203.0.113.5",
  "userAgent": "[S3Console]",
  "requestParameters": {
    "bucketName": "company-data-lake",
    "key": "sensitive/customer-data.csv",
    "x-amz-server-side-encryption": "AES256"
  },
  "responseElements": null,
  "additionalEventData": {
    "AuthenticationMethod": "AuthHeader"
  }
}
```

Refer to the exhibit. A security analyst is reviewing CloudTrail logs and notices a PutObject event to the 'company-data-lake' bucket. The bucket policy requires all objects to be encrypted with SSE-KMS. What should the analyst conclude?

Exhibit

Refer to the exhibit.

AWS CloudTrail log entry:
```
{
  "eventVersion": "1.08",
  "userIdentity": {
    "arn": "arn:aws:iam::123456789012:user/DataEngineer",
    "principalId": "AIDACKCEVSQ6C2EXAMPLE"
  },
  "eventTime": "2023-09-15T14:30:00Z",
  "eventSource": "s3.amazonaws.com",
  "eventName": "PutObject",
  "awsRegion": "us-east-1",
  "sourceIPAddress": "203.0.113.5",
  "userAgent": "[S3Console]",
  "requestParameters": {
    "bucketName": "company-data-lake",
    "key": "sensitive/customer-data.csv",
    "x-amz-server-side-encryption": "AES256"
  },
  "responseElements": null,
  "additionalEventData": {
    "AuthenticationMethod": "AuthHeader"
  }
}
```

A
The object was uploaded by the bucket owner, bypassing the policy.
Why wrong: The policy applies to all principals.
B
The request succeeded because SSE-S3 is acceptable.
Why wrong: The bucket policy requires SSE-KMS, so the request should be denied.
C
The object was encrypted with SSE-KMS as required.
Why wrong: The encryption header shows AES256, which is SSE-S3.
D
The object was encrypted with SSE-S3, which violates the bucket policy.
AES256 indicates SSE-S3, not KMS.

Full breakdown with real-world context →

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

✓

The object was encrypted with SSE-S3, which violates the bucket policy.

The bucket policy requires all objects to be encrypted with SSE-KMS. The CloudTrail log shows a PutObject event, but the encryption context (not shown in the exhibit) would indicate the encryption method used. Since the correct answer states the object was encrypted with SSE-S3, this violates the bucket policy, which mandates SSE-KMS. Therefore, the analyst should conclude that the request succeeded but violated the policy, as SSE-S3 does not meet the requirement.

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.

✗
The object was uploaded by the bucket owner, bypassing the policy.
Why it's wrong here
The policy applies to all principals.
✗
The request succeeded because SSE-S3 is acceptable.
Why it's wrong here
The bucket policy requires SSE-KMS, so the request should be denied.
✗
The object was encrypted with SSE-KMS as required.
Why it's wrong here
The encryption header shows AES256, which is SSE-S3.
✓
The object was encrypted with SSE-S3, which violates the bucket policy.
Why this is correct
AES256 indicates SSE-S3, not KMS.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

AWS often tests the nuance that a bucket policy requiring SSE-KMS does not automatically deny requests using SSE-S3; the policy must include an explicit Deny effect for non-compliant encryption to block the upload, so candidates may mistakenly think a requirement alone prevents the action.

Trap categories for this question

Command / output trap
The encryption header shows AES256, which is SSE-S3.

Detailed technical explanation

How to think about this question

SSE-KMS uses AWS KMS to manage encryption keys, providing additional control and auditability via key policies and CloudTrail key usage events. In contrast, SSE-S3 uses Amazon S3-managed keys (AES-256) and does not allow the same level of granular control. A bucket policy can enforce SSE-KMS using a condition like `s3:x-amz-server-side-encryption: aws:kms`, and if the request uses SSE-S3 instead, the policy evaluation will fail the condition, but the request may still succeed if the policy is not explicitly denying it—this is a common misconfiguration where the policy only requires SSE-KMS but does not deny other encryption methods, leading to a successful but non-compliant upload.

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.

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FAQ

Questions learners often ask

What does this DEA-C01 question test?

Data Security and Governance — This question tests Data Security and Governance — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The object was encrypted with SSE-S3, which violates the bucket policy. — The bucket policy requires all objects to be encrypted with SSE-KMS. The CloudTrail log shows a PutObject event, but the encryption context (not shown in the exhibit) would indicate the encryption method used. Since the correct answer states the object was encrypted with SSE-S3, this violates the bucket policy, which mandates SSE-KMS. Therefore, the analyst should conclude that the request succeeded but violated the policy, as SSE-S3 does not meet the requirement.

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.

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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.

DEA-C01 Data Security and Governance Practice Question

Exhibit

Exhibit

Why each option matters

Option-by-option breakdown

Common exam trap: answer the scenario, not the keyword

How to think about this question

KKey Concepts to Remember

TExam Day Tips

How this comes up in practice

AWS S3 Storage Class Comparison

Got this wrong? Here's your next step.

Related DEA-C01 practice-question pages

Data Ingestion and Transformation practice questions

Data Operations and Support practice questions

Data Security and Governance practice questions

Data Store Management practice questions

DEA-C01 fundamentals practice questions

DEA-C01 scenario practice questions

DEA-C01 troubleshooting practice questions

Start a free DEA-C01 practice session

Questions learners often ask

What does this DEA-C01 question test?

What is the correct answer to this question?

What should I do if I get this DEA-C01 question wrong?

What is the key concept behind this question?

More DEA-C01 practice questions

Question Discussion